rcar_gen3: drivers: rpc: Modify PFC code

Modify PFC code and rename macro of MFIS according to Errata of
Hardware User's Manual

Signed-off-by: Toshiyuki Ogasahara <toshiyuki.ogasahara.bo@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <yoshifumi.hosoya.wj@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: I0ece522647319286350843bbbe8b8ba8b0ae9bac
diff --git a/drivers/renesas/rcar/pfc/V3M/pfc_init_v3m.c b/drivers/renesas/rcar/pfc/V3M/pfc_init_v3m.c
index 51d6f42..6063758 100644
--- a/drivers/renesas/rcar/pfc/V3M/pfc_init_v3m.c
+++ b/drivers/renesas/rcar/pfc/V3M/pfc_init_v3m.c
@@ -709,7 +709,7 @@
 				   | IOCTRL31_POC_VI0_DATA7
 				   | IOCTRL31_POC_VI0_DATA6);
 
-	pfc_reg_write(PFC_POCCTRL1, 0x00000000);
+	pfc_reg_write(PFC_POCCTRL2, 0x00000000);
 
 	pfc_reg_write(PFC_TDSELCTRL0, 0x00000000);