ARM: OMAP: GPMC driver warning fix

To fix return type for GPMC api.
Signed-off-by: Syed Mohammed Khasim  <x0khasim@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/gpmc.c

@@ -264,13 +264,14 @@ static int gpmc_cs_mem_enabled(int cs)
 	return l & (1 << 6);
 }
 
-void gpmc_cs_set_reserved(int cs, int reserved)
+int gpmc_cs_set_reserved(int cs, int reserved)
 {
 	if (cs > GPMC_CS_NUM)
 		return -ENODEV;
 
 	gpmc_cs_map &= ~(1 << cs);
 	gpmc_cs_map |= (reserved ? 1 : 0) << cs;
+	return 0;
 }
 
 int gpmc_cs_reserved(int cs)

include/asm-arm/arch-omap/gpmc.h

@@ -88,7 +88,7 @@ extern int gpmc_cs_calc_divider(int cs, unsigned int sync_clk);
 extern int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t);
 extern int gpmc_cs_request(int cs, unsigned long size, unsigned long *base);
 extern void gpmc_cs_free(int cs);
-extern void gpmc_cs_set_reserved(int cs, int reserved);
+extern int gpmc_cs_set_reserved(int cs, int reserved);
 extern int gpmc_cs_reserved(int cs);
 
 #endif