Add license identifier to files which Arm owns the copyright to,
and contain either BSD-3 or Apache-2.0 licenses. This is to address
license errors raised by scancode analysis.
Mbed-os 5.4.7 was the last unofficial working support for this target.
Since Mbed-os 5.6.0, the support is now official and VK_RZ_A1H is now "codebase aligned" with GR_PEACH (RZ_A1H) & GR_LYCHEE (RZ_A1LU) !
I added the below definitions for working "Dynamic Stack" and "Dynamic heap" on Mbed OS by referencing with the codes of Cortex-M target board.
"ISR_STACK_START", "ISR_STACK_SIZE", "INITIAL_SP", "HEAP_START" and "HEAP_SIZE"