Add ARM_MUSCA_A1 target
Add ARM_MUSCA_A1 target

This commit adds ARM_MUSCA_A1 Cortex-M33 based target with 5006 ID.

Signed-off-by: Gabor Kertesz <a420acb60728d9b47dbf2bb97df4acf77d07e5fb@arm.com>

jupe/mbed-ls,jupe/mbed-ls