DA850: Add LPSC id for MMCSD1 peripheral

Add LPSC id for DA850's MMCSD1 peripheral.
Signed-off-by: Juha Kuikka <juha.kuikka@elektrobit.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-davinci/include/mach/psc.h

@@ -172,6 +172,7 @@
 #define DA8XX_LPSC1_UART2		13
 #define DA8XX_LPSC1_LCDC		16
 #define DA8XX_LPSC1_PWM			17
+#define DA850_LPSC1_MMC_SD1		18
 #define DA8XX_LPSC1_ECAP		20
 #define DA830_LPSC1_EQEP		21
 #define DA850_LPSC1_TPTC2		21