ARM: OMAP: Sync core code with linux-omap

This patch syncs omap specific core code with linux-omap.
Most of the changes are needed to fix bitrot caused by
driver updates in linux-omap tree.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index d8f5782..54c836a9 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -246,14 +246,22 @@
 	return l & (1 << 6);
 }
 
-static 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;
 }
 
-static int gpmc_cs_reserved(int cs)
+int gpmc_cs_reserved(int cs)
 {
+	if (cs > GPMC_CS_NUM)
+		return -ENODEV;
+
 	return gpmc_cs_map & (1 << cs);
 }