There is an error in #define FLEXCOMM_RSTS in drivers/fsl_reset.h causing FLEXCOMM9 to be resetted when actually FLEXCOMM10 should be resetted:
, ...kFC8_RST_SHIFT_RSTn, kFC9_RST_SHIFT_RSTn, kFC9_RST_SHIFT_RSTn
should be
, ...kFC8_RST_SHIFT_RSTn, kFC9_RST_SHIFT_RSTn, kFC10_RST_SHIFT_RSTn
SDK 2.12.0