rcar_gen3: drivers: pfc: D3: Drop unused M3W check

Drop check for SoC being M3W ES1.0 , this check is clearly bogus,
as this code can never be executed on M3W ES 1.0.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: If6087f1c217393dc65d20f6591eca40188563710

drivers/staging/renesas/rcar/pfc/D3/pfc_init_d3.c

 /*
- * Copyright (c) 2015-2017, Renesas Electronics Corporation. All rights reserved.
+ * Copyright (c) 2015-2019, Renesas Electronics Corporation. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -792,13 +792,6 @@
 #define	MOD_SEL2_VIN4_A		((uint32_t)0U << 0U)
 #define	MOD_SEL2_VIN4_B		((uint32_t)1U << 0U)
 
-
-/* SCIF3 Registers for Dummy write */
-#define SCIF3_BASE		(0xE6C50000U)
-#define SCIF3_SCFCR		(SCIF3_BASE + 0x0018U)
-#define SCIF3_SCFDR		(SCIF3_BASE + 0x001CU)
-#define SCFCR_DATA		(0x0000U)
-
 /* Realtime module stop control */
 #define	CPG_BASE		(0xE6150000U)
 #define CPG_MSTPSR0		(CPG_BASE + 0x0030U)
@@ -832,27 +825,12 @@
 #define RDMCHCRB_SLM_256	(0x00000080U)	/* once in 256 clock cycle */
 #define RDMDPBASE_SEL_EXT	(0x00000001U)	/* External memory use */
 
-
-static void pfc_reg_write(uint32_t addr, uint32_t data);
-
 static void pfc_reg_write(uint32_t addr, uint32_t data)
 {
-	uint32_t prr;
-
-	prr = mmio_read_32(RCAR_PRR);
-	prr &= (RCAR_PRODUCT_MASK | RCAR_CUT_MASK);
-
 	mmio_write_32(PFC_PMMR, ~data);
-	if (prr == (RCAR_PRODUCT_M3_CUT10)) {
-		mmio_write_16(SCIF3_SCFCR, SCFCR_DATA);	/* Dummy write */
-	}
 	mmio_write_32((uintptr_t)addr, data);
-	if (prr == (RCAR_PRODUCT_M3_CUT10)) {
-		mmio_write_16(SCIF3_SCFCR, SCFCR_DATA);	/* Dummy write */
-	}
 }
 
-
 void pfc_init_d3(void)
 {
 	/* initialize module select */