boards: nxp: frdm_mcxa153: Support ctimer for NXP frdm_mcxa153 board

Support ctimer for NXP frdm_mcxa153 board, correct Core clock
frequency to 96MHz.
Test using tests/drivers/counter/counter_basic_api.

Signed-off-by: Neil Chen <cheng.chen_1@nxp.com>
3 files changed