armv8/ls2085a: Enable DSPI get input clk form 'mxc_get_clock'

Signed-off-by: Haikun Wang <haikun.wang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/arch/arm/cpu/armv8/fsl-lsch3/speed.c b/arch/arm/cpu/armv8/fsl-lsch3/speed.c
index cac4f92..d9f137c 100644
--- a/arch/arm/cpu/armv8/fsl-lsch3/speed.c
+++ b/arch/arm/cpu/armv8/fsl-lsch3/speed.c
@@ -180,6 +180,8 @@
 	switch (clk) {
 	case MXC_I2C_CLK:
 		return get_bus_freq(0) / 2;
+	case MXC_DSPI_CLK:
+		return get_bus_freq(0) / 2;
 	default:
 		printf("Unsupported clock\n");
 	}
diff --git a/arch/arm/include/asm/arch-fsl-lsch3/clock.h b/arch/arm/include/asm/arch-fsl-lsch3/clock.h
index 831af0b..62bc53c 100644
--- a/arch/arm/include/asm/arch-fsl-lsch3/clock.h
+++ b/arch/arm/include/asm/arch-fsl-lsch3/clock.h
@@ -16,6 +16,7 @@
 	MXC_UART_CLK,
 	MXC_ESDHC_CLK,
 	MXC_I2C_CLK,
+	MXC_DSPI_CLK,
 };
 
 unsigned int mxc_get_clock(enum mxc_clock clk);