rcar_gen3: drivers: pfc: Introduce common register header file
rcar_gen3: drivers: pfc: Introduce common register header file

Introduce header file which contains the shared registers and bits
between the different SoCs.

Signed-off-by: Marek Vasut <bcf2901fa1b128a7a3f88ee031c46807a29aa29d@gmail.com>
Change-Id: I5f41d39347b9d57e3efdea24ae61a16d5c7efb80

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware