ARM: dts: imx7: Add "LPSR" to LPSR iomux pin names

The i.MX7 has two iomux controllers. the iomuxc and the iomuxc_lpsr.
In a board dts we have to make sure that both controllers are supplied
with the correct pins. It's way too easy to do this wrong since only
a look into the reference manual can reveal which pins belong to which
controller. To make this clearer add "LPSR" to the pin names which
belong to the LPSR controller.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
diff --git a/arch/arm/boot/dts/imx7d-sdb.dts b/arch/arm/boot/dts/imx7d-sdb.dts
index 66cf5b4..94edf8e 100644
--- a/arch/arm/boot/dts/imx7d-sdb.dts
+++ b/arch/arm/boot/dts/imx7d-sdb.dts
@@ -635,13 +635,13 @@
 &iomuxc_lpsr {
 	pinctrl_wdog: wdoggrp {
 		fsl,pins = <
-			MX7D_PAD_GPIO1_IO00__WDOD1_WDOG_B	0x74
+			MX7D_PAD_LPSR_GPIO1_IO00__WDOD1_WDOG_B		0x74
 		>;
 	};
 
 	pinctrl_pwm1: pwm1grp {
 		fsl,pins = <
-			MX7D_PAD_GPIO1_IO01__PWM1_OUT		0x110b0
+			MX7D_PAD_LPSR_GPIO1_IO01__PWM1_OUT		0x110b0
 		>;
 	};
 };