Change cadence i2c driver from module to built-in driver

On Kria KD240 slg7xl45106 device is handling reset for USB hub which is
providing access to SD card (USB/SD converter). Access to this device is
done via i2c which needs to be also enabled in the kernel as built-in
driver not as module when rootfs is mounted.

Author: michalsimek

buildroot-external/board/arm-uefi/generic-aarch64/kernel.config

@@ -69,5 +69,8 @@ CONFIG_PHY_XILINX_ZYNQMP=y
 # TODO: change to `CONFIG_USB_ONBOARD_DEV` in 6.12
 CONFIG_USB_ONBOARD_HUB=y
 
+# i2c support
+CONFIG_I2C_CADENCE=y
+
 # 1-wire
 CONFIG_W1_MASTER_AMD_AXI=m