fix mmc entries in dm365's dma_slave_map to match the actual device names

Fixes: 0c750e1f ("ARM: davinci: dm365: Add dma_slave_map to edma")
Signed-off-by: Alejandro Mery <amery@hanoverdisplays.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>