ARM: OMAP2+: gpmc: annotate exit sections properly

compiler complained,
`gpmc_remove' referenced in section `.data' of arch/arm/mach-omap2/built-in.o: defined in discarded section `.exit.text' of arch/arm/mach-omap2/built-in.o

Annotate gpmc_remove function and dependents with __devexit.
Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/gpmc.c

@@ -838,7 +838,7 @@ static int gpmc_setup_irq(void)
 	return request_irq(gpmc_irq, gpmc_handle_irq, 0, "gpmc", NULL);
 }
 
-static __exit int gpmc_free_irq(void)
+static __devexit int gpmc_free_irq(void)
 {
 	int i;
 
@@ -944,7 +944,7 @@ static __devinit int gpmc_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static __exit int gpmc_remove(struct platform_device *pdev)
+static __devexit int gpmc_remove(struct platform_device *pdev)
 {
 	gpmc_free_irq();
 	gpmc_mem_exit();