fix(drivers/rcar3): fix CPG registers redefinition

This commit deletes the value of the redefined CPG register.

Signed-off-by: Toshiyuki Ogasahara <toshiyuki.ogasahara.bo@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <yoshifumi.hosoya.wj@renesas.com>
Change-Id: I05cf4a449ae28adb2ddd59593971a7d0cbcb21de
diff --git a/drivers/renesas/common/emmc/emmc_init.c b/drivers/renesas/common/emmc/emmc_init.c
index 9c2ec47..c0ec600 100644
--- a/drivers/renesas/common/emmc/emmc_init.c
+++ b/drivers/renesas/common/emmc/emmc_init.c
@@ -88,11 +88,11 @@
 	SETR_32(SD_INFO2_MASK, SD_INFO2_CLEAR);	/* all interrupt disable */
 	SETR_32(SD_CLK_CTRL, 0x00000000U);	/* MMC clock stop */
 
-	dataL = mmio_read_32(CPG_SMSTPCR3);
+	dataL = mmio_read_32(SMSTPCR3);
 	if ((dataL & CPG_MSTP_MMC) == 0U) {
 		dataL |= (CPG_MSTP_MMC);
 		mmio_write_32(CPG_CPGWPR, (~dataL));
-		mmio_write_32(CPG_SMSTPCR3, dataL);
+		mmio_write_32(SMSTPCR3, dataL);
 	}
 
 	return result;
@@ -101,7 +101,7 @@
 static EMMC_ERROR_CODE emmc_dev_init(void)
 {
 	/* Enable clock supply to eMMC. */
-	mstpcr_write(CPG_SMSTPCR3, CPG_MSTPSR3, CPG_MSTP_MMC);
+	mstpcr_write(SMSTPCR3, CPG_MSTPSR3, CPG_MSTP_MMC);
 
 	/* Set SD clock */
 	mmio_write_32(CPG_CPGWPR, ~((uint32_t) (BIT9 | BIT0)));	/* SD phy 200MHz */