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

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

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

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/clk/dpll-tail.c b/arch/arm/mach-uniphier/clk/dpll-tail.c
index 7f434f6..6ba5a36 100644
--- a/arch/arm/mach-uniphier/clk/dpll-tail.c
+++ b/arch/arm/mach-uniphier/clk/dpll-tail.c
@@ -14,7 +14,7 @@
 {
 	u32 tmp;
 
-	tmp = readl(SC_DPLLCTRL);
+	tmp = readl(sc_base + SC_DPLLCTRL);
 	tmp |= SC_DPLLCTRL_SSC_EN;
-	writel(tmp, SC_DPLLCTRL);
+	writel(tmp, sc_base + SC_DPLLCTRL);
 }