nxp: adding gic apis for nxp soc

GIC api used by NXP SoC is based on:
- arm provided drivers: /drivers/arm/gic

Signed-off-by: Pankaj Gupta <pankaj.gupta@nxp.com>
Change-Id: If3d470256e5bd078614f191e56062c4fbd97f8bd
5 files changed