Tab5 ST7121 variant + fixes (#605)

Added the newest variant to the tab5, St7121.
Fixed variant detection reliability
Fixed tab5 camera WHO_AM_I failing sometimes
Fixed tab5 keyboard live rotation on boot and after stopping/starting lvgl

Drivers/sc2356-module/bindings/smartsens,sc2356.yaml

@@ -3,3 +3,13 @@ description: Smartsens SC2356 2MP MIPI CSI camera sensor
 include: [ "i2c-device.yaml" ]
 
 compatible: "smartsens,sc2356"
+
+properties:
+  pin-reset:
+    type: phandles
+    default: GPIO_PIN_SPEC_NONE
+    description: >
+      Reset GPIO pin. Pulsed (asserted then released, with a settle delay) before the sensor is
+      probed in start_device. Typically wired through a board's IO expander rather than a direct
+      SoC GPIO, so it's handled here via the generic gpio_descriptor API rather than
+      esp_video_init's csi_config.reset_pin (which only accepts native SoC GPIOs).