ARM: dts: Add SDHC1 and SDHC2 devices for msmsamarium MTP

Add device tree entries to enable the standard host controllers 1 and 2
that supports eMMC and SD devices.

Change-Id: I791d76c2f5f27a964f6b3540c4dd58b2270db12c
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>