gpio/omap: remove cpu_is_omapxxxx() checks from *_runtime_resume()

Add register offsets for GPIO_IRQSTATUS_RAW_0, GPIO_IRQSTATUS_RAW_0
which are present on OMAP4+ processors. Now we can distinguish
conditions applicable to OMAP4,5 and those specific to OMAP24xx
and OMAP3xxx.

Cc: Kevin Hilman <khilman@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Cousson, Benoit <b-cousson@ti.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Govindraj.R <govindraj.raja@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

arch/arm/mach-omap2/gpio.c

@@ -101,6 +101,8 @@ static int __init omap2_gpio_dev_init(struct omap_hwmod *oh, void *unused)
 		pdata->regs->dataout = OMAP4_GPIO_DATAOUT;
 		pdata->regs->set_dataout = OMAP4_GPIO_SETDATAOUT;
 		pdata->regs->clr_dataout = OMAP4_GPIO_CLEARDATAOUT;
+		pdata->regs->irqstatus_raw0 = OMAP4_GPIO_IRQSTATUSRAW0;
+		pdata->regs->irqstatus_raw1 = OMAP4_GPIO_IRQSTATUSRAW1;
 		pdata->regs->irqstatus = OMAP4_GPIO_IRQSTATUS0;
 		pdata->regs->irqstatus2 = OMAP4_GPIO_IRQSTATUS1;
 		pdata->regs->irqenable = OMAP4_GPIO_IRQSTATUSSET0;

arch/arm/plat-omap/include/plat/gpio.h

@@ -172,6 +172,8 @@ struct omap_gpio_reg_offs {
 	u16 clr_dataout;
 	u16 irqstatus;
 	u16 irqstatus2;
+	u16 irqstatus_raw0;
+	u16 irqstatus_raw1;
 	u16 irqenable;
 	u16 irqenable2;
 	u16 set_irqenable;

drivers/gpio/gpio-omap.c

@@ -1286,14 +1286,14 @@ static int omap_gpio_runtime_resume(struct device *dev)
 		old0 = __raw_readl(bank->base + bank->regs->leveldetect0);
 		old1 = __raw_readl(bank->base + bank->regs->leveldetect1);
 
-		if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
+		if (!bank->regs->irqstatus_raw0) {
 			__raw_writel(old0 | gen, bank->base +
 						bank->regs->leveldetect0);
 			__raw_writel(old1 | gen, bank->base +
 						bank->regs->leveldetect1);
 		}
 
-		if (cpu_is_omap44xx()) {
+		if (bank->regs->irqstatus_raw0) {
 			__raw_writel(old0 | l, bank->base +
 						bank->regs->leveldetect0);
 			__raw_writel(old1 | l, bank->base +