arch: arm: aarch32: Use ARRAY_SIZE in for loop
arch: arm: aarch32: Use ARRAY_SIZE in for loop

Do not hardcode the array size in the loop for printing out the floating
point registers of the exception stack frame.  The size of this array
will change when Cortex-R support is added.

Signed-off-by: Bradley Bolen <a46f022a58b40f08f87b914d58da7dec46dba40c@lexmark.com>

galak/zephyr,nashif/zephyr,nashif/zephyr,finikorg/zephyr,galak/zephyr,nashif/zephyr,nashif/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,nashif/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr