ARM: dts: msm: add sdhc1 and sdhc2 node for sdmmagpie

Add entries for sdhc1 and sdhc2 for sdmmagpie, enabled sdhc_1 only.

Change-Id: I8bc8b1c6d5b84d4a01839212f985c20651ff8f50
Signed-off-by: Ram Prakash Gupta <rampraka@codeaurora.org>