drivers: renesas: rcar: scif: Fix coding style

Replace TAB with space after #define macros and update comments as per
TF-A coding style.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Change-Id: Iff46838a41f991f7dd9dc6fb043e9e482ea0b11d
1 file changed