exynos: pinmux: remove unnecessary routine

Because of the list of peripherals is not sequential,
such a routine does not check for valid correctly.
Error check will be done when call the exynos_pinmux_config function.

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c
index 904177a..645c497 100644
--- a/arch/arm/cpu/armv7/exynos/pinmux.c
+++ b/arch/arm/cpu/armv7/exynos/pinmux.c
@@ -751,12 +751,7 @@
 	if (err)
 		return PERIPH_ID_NONE;
 
-	/* check for invalid peripheral id */
-	if ((PERIPH_ID_SDMMC4 > cell[1]) || (cell[1] < PERIPH_ID_UART0))
-		return cell[1];
-
-	debug(" invalid peripheral id\n");
-	return PERIPH_ID_NONE;
+	return cell[1];
 }
 
 int pinmux_decode_periph_id(const void *blob, int node)