Add RPMH_CXO_CLK as ref_clk to UFS for Sun on pre-sil.
On Rumi ref_clk is to UFS PHY is 19.2MHz and actual device
it is 38.4MHz.
Also update correct gcc header file for sun.
Change-Id: I78ed60095e5229405e7962f4676bfab7b7556676
Signed-off-by: Vivek Aknurwar <quic_viveka@quicinc.com>