wiki: Promote miatoll to 21

Change-Id: I1d93b93b47e41983a1ac62a8eeaa57c9256daf90

_data/devices/miatoll_variant1.yml

@@ -14,7 +14,7 @@ codename: miatoll
 cpu: Kryo 465
 cpu_cores: '8'
 cpu_freq: 6 x 1.8 GHz + 2 x 2.3 GHz
-current_branch: 20
+current_branch: 21
 dimensions: {depth: 8.8, height: 165.7, width: 76.6}
 download_boot: With the device powered off, hold <kbd>Volume Down</kbd> + <kbd>Power</kbd>. Keep holding both buttons until the word "FASTBOOT" appears on the screen, then release.
 firmware_update: firmware_update_xiaomi_miatoll
@@ -40,5 +40,5 @@ type: phone
 variant: 1
 vendor: Xiaomi
 vendor_short: xiaomi
-versions: [18.1, 19.1, 20]
+versions: [18.1, 19.1, 20, 21]
 wifi: 802.11 a/b/g/n/ac

_data/devices/miatoll_variant2.yml

@@ -14,7 +14,7 @@ codename: miatoll
 cpu: Kryo 465
 cpu_cores: '8'
 cpu_freq: 6 x 1.8 GHz + 2 x 2.3 GHz
-current_branch: 20
+current_branch: 21
 dimensions: {depth: 8.8, height: 165.7, width: 76.6}
 download_boot: With the device powered off, hold <kbd>Volume Down</kbd> + <kbd>Power</kbd>. Keep holding both buttons until the word "FASTBOOT" appears on the screen, then release.
 firmware_update: firmware_update_xiaomi_miatoll
@@ -40,5 +40,5 @@ type: phone
 variant: 2
 vendor: Xiaomi
 vendor_short: xiaomi
-versions: [18.1, 19.1, 20]
+versions: [18.1, 19.1, 20, 21]
 wifi: 802.11 a/b/g/n/ac

_data/devices/miatoll_variant3.yml

@@ -14,7 +14,7 @@ codename: miatoll
 cpu: Kryo 465
 cpu_cores: '8'
 cpu_freq: 6 x 1.8 GHz + 2 x 2.3 GHz
-current_branch: 20
+current_branch: 21
 dimensions: {depth: 8.8, height: 165.7, width: 76.6}
 download_boot: With the device powered off, hold <kbd>Volume Down</kbd> + <kbd>Power</kbd>. Keep holding both buttons until the word "FASTBOOT" appears on the screen, then release.
 firmware_update: firmware_update_xiaomi_miatoll
@@ -40,5 +40,5 @@ type: phone
 variant: 3
 vendor: Xiaomi
 vendor_short: xiaomi
-versions: [18.1, 19.1, 20]
+versions: [18.1, 19.1, 20, 21]
 wifi: 802.11 a/b/g/n/ac

_data/devices/miatoll_variant4.yml

@@ -14,7 +14,7 @@ codename: miatoll
 cpu: Kryo 465
 cpu_cores: '8'
 cpu_freq: 6 x 1.8 GHz + 2 x 2.3 GHz
-current_branch: 20
+current_branch: 21
 dimensions: {depth: 8.8, height: 165.7, width: 76.6}
 download_boot: With the device powered off, hold <kbd>Volume Down</kbd> + <kbd>Power</kbd>. Keep holding both buttons until the word "FASTBOOT" appears on the screen, then release.
 firmware_update: firmware_update_xiaomi_miatoll
@@ -40,5 +40,5 @@ type: phone
 variant: 4
 vendor: Xiaomi
 vendor_short: xiaomi
-versions: [18.1, 19.1, 20]
+versions: [18.1, 19.1, 20, 21]
 wifi: 802.11 a/b/g/n/ac

_data/devices/miatoll_variant5.yml

@@ -14,7 +14,7 @@ codename: miatoll
 cpu: Kryo 465
 cpu_cores: '8'
 cpu_freq: 6 x 1.8 GHz + 2 x 2.3 GHz
-current_branch: 20
+current_branch: 21
 dimensions: {depth: 8.8, height: 165.7, width: 76.6}
 download_boot: With the device powered off, hold <kbd>Volume Down</kbd> + <kbd>Power</kbd>. Keep holding both buttons until the word "FASTBOOT" appears on the screen, then release.
 firmware_update: firmware_update_xiaomi_miatoll
@@ -40,5 +40,5 @@ type: phone
 variant: 5
 vendor: Xiaomi
 vendor_short: xiaomi
-versions: [18.1, 19.1, 20]
+versions: [18.1, 19.1, 20, 21]
 wifi: 802.11 a/b/g/n/ac

_data/devices/miatoll_variant6.yml

@@ -14,7 +14,7 @@ codename: miatoll
 cpu: Kryo 465
 cpu_cores: '8'
 cpu_freq: 6 x 1.8 GHz + 2 x 2.3 GHz
-current_branch: 20
+current_branch: 21
 dimensions: {depth: 8.8, height: 165.7, width: 76.6}
 download_boot: With the device powered off, hold <kbd>Volume Down</kbd> + <kbd>Power</kbd>. Keep holding both buttons until the word "FASTBOOT" appears on the screen, then release.
 firmware_update: firmware_update_xiaomi_miatoll
@@ -40,5 +40,5 @@ type: phone
 variant: 6
 vendor: Xiaomi
 vendor_short: xiaomi
-versions: [18.1, 19.1, 20]
+versions: [18.1, 19.1, 20, 21]
 wifi: 802.11 a/b/g/n/ac