drivers: mmc: add driver for Microchip PIC32 SDHCI controller.

This driver implements platform specific glue and fixups for
PIC32 internal SDHCI controller.

Signed-off-by: Andrei Pistirica <andrei.pistirica@microchip.com>
Signed-off-by: Sandeep Sheriker Mallikarjun <sandeepsheriker.mallikarjun@microchip.com>
Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 5d35705..c9c3e3e 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -48,4 +48,4 @@
 else
 obj-$(CONFIG_GENERIC_MMC) += mmc_write.o
 endif
-
+obj-$(CONFIG_PIC32_SDHCI) += pic32_sdhci.o