arm: Print NXP MPU error information in BusFault dump

The NXP MPU triggers a bus fault when a memory access error occurs. Add
support in the bus fault handler to dump error details from the NXP MPU,
including the port number, mode (supervisor or user), address, bus
master number, and regions.

Signed-off-by: Maureen Helm <maureen.helm@nxp.com>