Davinci: pinmux - use ioremap()

This patch modifies the pinmux implementation so as to ioremap() the pinmux
register area on first use.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c
index 5ab39f6..3834781 100644
--- a/arch/arm/mach-davinci/dm355.c
+++ b/arch/arm/mach-davinci/dm355.c
@@ -844,7 +844,7 @@
 	.cpu_clks		= dm355_clks,
 	.psc_bases		= dm355_psc_bases,
 	.psc_bases_num		= ARRAY_SIZE(dm355_psc_bases),
-	.pinmux_base		= IO_ADDRESS(DAVINCI_SYSTEM_MODULE_BASE),
+	.pinmux_base		= DAVINCI_SYSTEM_MODULE_BASE,
 	.pinmux_pins		= dm355_pins,
 	.pinmux_pins_num	= ARRAY_SIZE(dm355_pins),
 	.intc_base		= DAVINCI_ARM_INTC_BASE,