ARM: uniphier: de-couple SG macros into base address and offset

The SG_* macros represent the address of SoC-glue registers.
For a planned new SoC, its base address will be changed.

Turn the SG_* macros into the offset from the base address.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/debug-uart/debug-uart.c b/arch/arm/mach-uniphier/debug-uart/debug-uart.c
index bc96b2e..a70ce59 100644
--- a/arch/arm/mach-uniphier/debug-uart/debug-uart.c
+++ b/arch/arm/mach-uniphier/debug-uart/debug-uart.c
@@ -32,7 +32,8 @@
 		   unsigned int mux_bits, unsigned int reg_stride)
 {
 	unsigned int shift = pin * mux_bits % 32;
-	unsigned long reg = SG_PINCTRL_BASE + pin * mux_bits / 32 * reg_stride;
+	void __iomem *reg = sg_base + SG_PINCTRL_BASE +
+					pin * mux_bits / 32 * reg_stride;
 	u32 mask = (1U << mux_bits) - 1;
 	u32 tmp;
 
@@ -45,7 +46,7 @@
 void sg_set_iectrl(unsigned int pin)
 {
 	unsigned int bit = pin % 32;
-	unsigned long reg = SG_IECTRL + pin / 32 * 4;
+	void __iomem *reg = sg_base + SG_IECTRL + pin / 32 * 4;
 	u32 tmp;
 
 	tmp = readl(reg);