ARM: OMAP3: Fix number of GPIO lines for 34xx

As per 3430 TRM, there are 6 banks [0 to 191]
Signed-off-by: NTom Rix <Tom.Rix@windriver.com>
Signed-off-by: NVikram Pandita <vikram.pandita@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/plat-omap/gpio.c

@@ -307,7 +307,7 @@ static inline int gpio_valid(int gpio)
 		return 0;
 	if (cpu_is_omap24xx() && gpio < 128)
 		return 0;
-	if (cpu_is_omap34xx() && gpio < 160)
+	if (cpu_is_omap34xx() && gpio < 192)
 		return 0;
 	return -1;
 }