ARM: dts: msm: Add DT entries for SATA controller and PHY on APQ8084

Add AHCI SATA controller and MSM SATA PHY nodes for APQ8084.
APQ8084 supports UFS-SATA combo PHY which means PHY is shared between
SATA and UFS and is mutually exclusive. Hence, add the necessary
DT entries and by default the status of device node is disabled.
SATA should be enabled only on those boards that reworked for the
external differential pins to connect to SATA HDD.

Change-Id: Ib8832edcb15fd57d46aaf229ed50d89282ed9969
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>