clk: msm: 8937: Fixes for GCC clocks for msm8937

Msm8937 does not have oxili_gmem_clock, remove the instance of it from
oxili_gx gdsc node, clear oxili_gmem_clamp_io bit in gx_domain_misc
register, modify byte clock ops to use byte multiparent clock ops.

Change-Id: Ieec12a71cc14be6bd94303acb1ecbfb88eea73c6
Signed-off-by: Jaydeep Sen <jsen@codeaurora.org>