ARM: at91: dts: sama5d3: change name of pinctrl of ISI_MCK

For sama5d3xmb board, the pins: pinctrl_isi_pck_as_mck is pck1, and
used to provide MCK for camera sensor.

We change its name to: pinctrl_pck1_as_isi_mck.

As we want camera sensor instead of ISI to configure the pck1 (ISI_MCK) pin.
So we remove this pinctrl from ISI DT node. It will be added in sensor's
DT node.
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/sama5d3xmb.dtsi

@@ -61,7 +61,7 @@ usart1: serial@f0020000 {
 
 			isi: isi@f0034000 {
 				pinctrl-names = "default";
-				pinctrl-0 = <&pinctrl_isi_data_0_7 &pinctrl_isi_pck_as_mck>;
+				pinctrl-0 = <&pinctrl_isi_data_0_7>;
 			};
 
 			mmc1: mmc@f8000000 {
@@ -117,7 +117,7 @@ pinctrl_pck0_as_audio_mck: pck0_as_audio_mck {
 							<AT91_PIOD 30 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PD30 periph B */
 					};
 
-					pinctrl_isi_pck_as_mck: isi_pck_as_mck-0 {
+					pinctrl_pck1_as_isi_mck: pck1_as_isi_mck-0 {
 						atmel,pins =
 							<AT91_PIOD 31 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PD31 periph B ISI_MCK */
 					};