feat(plat/rcar3): add process of SSCG setting for R-Car D3

- Added the condition where output the SSCG (MD12) setting
  to log for R-Car D3.
- Added the process to switching the bit rate of SCIF by the
  SSCG (MD12) setting value for R-Car D3.

Signed-off-by: Hideyuki Nitta <hideyuki.nitta.jf@hitachi.com>
Signed-off-by: Toshiyuki Ogasahara <toshiyuki.ogasahara.bo@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <yoshifumi.hosoya.wj@renesas.com>
Change-Id: Iaf07fa4df12dc233af0b57569ee4fa9329f670a9
diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
index 3bd20e2..e07b96f 100644
--- a/plat/renesas/rcar/bl2_plat_setup.c
+++ b/plat/renesas/rcar/bl2_plat_setup.c
@@ -916,7 +916,7 @@
 		NOTICE("BL2: PRR is R-Car %s Ver.%d.%d\n", str, major, minor);
 	}
 
-	if (product == PRR_PRODUCT_E3) {
+	if (PRR_PRODUCT_E3 == product || PRR_PRODUCT_D3 == product) {
 		reg = mmio_read_32(RCAR_MODEMR);
 		sscg = reg & RCAR_SSCG_MASK;
 		str = sscg == RCAR_SSCG_ENABLE ? sscg_on : sscg_off;