feat(driver): autodetect IMU, add support for SC7U22 (#7191)

Co-authored-by: raphaelcoeffic <1050031+raphaelcoeffic@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

radio/src/targets/st16/board.cpp

@@ -48,11 +48,13 @@
 #include "sdcard.h"
 #include "debug.h"
 #include "keys.h"
+#include "gyro.h"
 
 #include "flysky_gimbal_driver.h"
 #include "timers_driver.h"
 
 #include "battery_driver.h"
+#include "drivers/lsm6ds.h"
 
 #include "bitmapbuffer.h"
 #include "colors.h"
@@ -173,6 +175,14 @@ void boardBLInit()
   flashRegisterDriver(QSPI_BASE, 8 * 1024 * 1024, &extflash_driver);
 }
 
+static void gyroInit()
+{
+  const etx_imu_t candidates[] = {
+    { &imu_lsm6ds_driver, IMU_I2C_BUS, IMU_I2C_ADDRESS },
+  };
+  gyroStart(imuDetect(candidates, DIM(candidates)));
+}
+
 void boardInit()
 {
   // enable interrupts
@@ -263,6 +273,8 @@ void boardInit()
 #if defined(RTCLOCK)
   rtcInit(); // RTC must be initialized before rambackupRestore() is called
 #endif
+
+  gyroInit();
 }
 
 extern void rtcDisableBackupReg();