ARM: dts: msm: Update GCC_UFS_PHY_AXI_CLK rate for sdmmagpie and sm6150

Align GCC_UFS_PHY_AXI_CLK max clock rate to its' max NOM rate to save
power. There isn't any performance gain by running in max TURBO rate.

Change-Id: I209b4e8017afac2ec8987b69a9b48df56452d87b
Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>