rockchip/rk3399: convert to for-loops to save code space

This converts two functions to use for-loops. This saves a bit of
space to help moving DRAM resume code to PMUSRAM.

Change-Id: Ie6ca490cf50c2ec83335cf1845b337c3e8a47496
Signed-off-by: Derek Basehore <dbasehore@chromium.org>

plat/rockchip/rk3399/drivers/dram/suspend.c

@@ -121,11 +121,12 @@ static __sramfunc void phy_pctrl_reset(uint32_t ch)
 
 static __sramfunc void set_cs_training_index(uint32_t ch, uint32_t rank)
 {
+	uint32_t byte;
+
 	/* PHY_8/136/264/392 phy_per_cs_training_index_X 1bit offset_24 */
-	mmio_clrsetbits_32(PHY_REG(ch, 8), 0x1 << 24, rank << 24);
-	mmio_clrsetbits_32(PHY_REG(ch, 136), 0x1 << 24, rank << 24);
-	mmio_clrsetbits_32(PHY_REG(ch, 264), 0x1 << 24, rank << 24);
-	mmio_clrsetbits_32(PHY_REG(ch, 392), 0x1 << 24, rank << 24);
+	for (byte = 0; byte < 4; byte++)
+		mmio_clrsetbits_32(PHY_REG(ch, 8 + (128 * byte)), 0x1 << 24,
+				   rank << 24);
 }
 
 static __sramfunc void select_per_cs_training_index(uint32_t ch, uint32_t rank)
@@ -139,19 +140,17 @@ static void override_write_leveling_value(uint32_t ch)
 {
 	uint32_t byte;
 
+	for (byte = 0; byte < 4; byte++) {
 		/*
 		 * PHY_8/136/264/392
 		 * phy_per_cs_training_multicast_en_X 1bit offset_16
 		 */
-	mmio_clrsetbits_32(PHY_REG(ch, 8), 0x1 << 16, 1 << 16);
-	mmio_clrsetbits_32(PHY_REG(ch, 136), 0x1 << 16, 1 << 16);
-	mmio_clrsetbits_32(PHY_REG(ch, 264), 0x1 << 16, 1 << 16);
-	mmio_clrsetbits_32(PHY_REG(ch, 392), 0x1 << 16, 1 << 16);
-
-	for (byte = 0; byte < 4; byte++)
+		mmio_clrsetbits_32(PHY_REG(ch, 8 + (128 * byte)), 0x1 << 16,
+				   1 << 16);
 		mmio_clrsetbits_32(PHY_REG(ch, 63 + (128 * byte)),
 				   0xffff << 16,
 				   0x200 << 16);
+	}
 
 	/* CTL_200 ctrlupd_req 1bit offset_8 */
 	mmio_clrsetbits_32(CTL_REG(ch, 200), 0x1 << 8, 0x1 << 8);