clk: qcom: gpucc-msm8998: Remove unnecessary fallbacks to global clocks

clk: qcom: gpucc-msm8998: Remove unnecessary fallbacks to global clocks

A previous patch removes the "xo" clock from the global namespace making
it impossible to acquire by that ".name".  The device-tree for msm8998
already provides the "xo" and "gpll0" clock since the addition of the
gpucc node making it unnecessary to have this fallback at all.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
Link: https://lore.kernel.org/r/20210911121340.261920-8-marijn.suijten@somainline.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>