armv8: fsl-lsch3: add clock support for the second eSDHC

Layerscape began to use two eSDHC controllers, for example,
LS1028A. They are same IP block with same reference clock.
This patch is to add clock support for the second eSDHC.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
diff --git a/arch/arm/include/asm/arch-fsl-layerscape/clock.h b/arch/arm/include/asm/arch-fsl-layerscape/clock.h
index cf058d2..b37a08d 100644
--- a/arch/arm/include/asm/arch-fsl-layerscape/clock.h
+++ b/arch/arm/include/asm/arch-fsl-layerscape/clock.h
@@ -1,6 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright 2015 Freescale Semiconductor, Inc.
+ * Copyright 2019 NXP Semiconductors
  *
  */
 
@@ -14,6 +15,7 @@
 	MXC_BUS_CLK,
 	MXC_UART_CLK,
 	MXC_ESDHC_CLK,
+	MXC_ESDHC2_CLK,
 	MXC_I2C_CLK,
 	MXC_DSPI_CLK,
 };