ARM: OMAP2: Fix sparse, checkpatch warnings fro GPMC code, use ioremap

Fix sparse, checkpatch warnings fro GPMC code.

Also change to use ioremap, and add missing function prototypes
to gpmc.h.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/plat-omap/include/mach/gpmc.h b/arch/arm/plat-omap/include/mach/gpmc.h
index 6a8e07f..4258e00c 100644
--- a/arch/arm/plat-omap/include/mach/gpmc.h
+++ b/arch/arm/plat-omap/include/mach/gpmc.h
@@ -11,6 +11,9 @@
 #ifndef __OMAP2_GPMC_H
 #define __OMAP2_GPMC_H
 
+/* Maximum Number of Chip Selects */
+#define GPMC_CS_NUM		8
+
 #define GPMC_CS_CONFIG1		0x00
 #define GPMC_CS_CONFIG2		0x04
 #define GPMC_CS_CONFIG3		0x08
@@ -81,6 +84,7 @@
 };
 
 extern unsigned int gpmc_ns_to_ticks(unsigned int time_ns);
+extern unsigned int gpmc_ticks_to_ns(unsigned int ticks);
 extern unsigned int gpmc_round_ns_to_ticks(unsigned int time_ns);
 extern unsigned long gpmc_get_fclk_period(void);
 
@@ -92,5 +96,6 @@
 extern void gpmc_cs_free(int cs);
 extern int gpmc_cs_set_reserved(int cs, int reserved);
 extern int gpmc_cs_reserved(int cs);
+extern void gpmc_init(void);
 
 #endif