configs/surface-6.6: Replace CIO2_BRIDGE with IPU_BRIDGE

CONFIG_CIO2_BRIDGE has been removed and we have to actively enable
CONFIG_IPU_BRIDGE now as it is no longer selected by
CONFIG_VIDEO_IPU3_CIO2.

configs/surface-6.6.config

@@ -39,7 +39,7 @@ CONFIG_HID_ITHC=m
 CONFIG_VIDEO_DW9719=m
 CONFIG_VIDEO_IPU3_IMGU=m
 CONFIG_VIDEO_IPU3_CIO2=m
-CONFIG_CIO2_BRIDGE=y
+CONFIG_IPU_BRIDGE=m
 CONFIG_INTEL_SKL_INT3472=m
 CONFIG_REGULATOR_TPS68470=m
 CONFIG_COMMON_CLK_TPS68470=m