keystone2: ddr: add DDR3 PHY configs updated for PG 2.0

Add DDR3 PHY configs updated for PG 2.0
Also add DDR3A PHY reset before init for PG2.0 SoCs.

Acked-by: Murali Karicheri <m-maricheri2@ti.com>
Signed-off-by: Hao Zhang <hzhang@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
diff --git a/arch/arm/include/asm/arch-keystone/hardware.h b/arch/arm/include/asm/arch-keystone/hardware.h
index f8f986c..db2d36b 100644
--- a/arch/arm/include/asm/arch-keystone/hardware.h
+++ b/arch/arm/include/asm/arch-keystone/hardware.h
@@ -80,6 +80,8 @@
 #define KS2_DDR3_PMCTL_OFFSET           0x38
 #define KS2_DDR3_ZQCFG_OFFSET           0xC8
 
+#define KS2_DDR3_PLLCTRL_PHY_RESET	0x80000000
+
 #define KS2_UART0_BASE                	0x02530c00
 #define KS2_UART1_BASE                	0x02531000