devices: add CP Plus CP-UNC-TA21L2C (gk7205v200_lite, SC223A) (#106)

Dahua-OEM 2 MP camera. The SC223A is on hardware I2C0 routed to the
VI-RAW pads (0x112c0060/0x64 func2) rather than the default mipi-sensor
pads (0x30/0x34 func1) the SDK probes, and needs a 27 MHz MCLK
(0x120100f0=0x19; SDK default 0x11/div4 leaves it unresponsive).
S71devmem re-muxes the pads, selects the SENSOR_RSTN reset (GPIO8_7
func2) and fixes MCLK after S70vendor/load_goke; the stock
open_sensor_i2c then reaches the sensor over /dev/i2c-0. No kernel
module needed.

Verified on hardware: chip-id 0xcb3e over HW I2C0, MIPI lock 1920x1080
zero errors, majestic streams correct colour 1080p.

Co-authored-by: build <build@local>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.github/workflows/master.yml

@@ -60,6 +60,7 @@ jobs:
           - gk7202v300_lite_cootli_camv0103
           - gk7202v300_lite_ipg-g3-wr
           - gk7202v300_lite_xg521
+          - gk7205v200_lite_cpplus-cp-unc-ta21l2c
           - gk7205v200_lite_tiandy-tc-c321n
           - gk7205v200_lite_vixand-ipc-1
           - gk7205v200_lite_vixand-iph-5-4g