pinctrl: qcom: Enable clock while configuring slpi tlmm registers

On some targets, the slpi pin controller seems to be un-clocked
while trying to configure it. Enable clocked access while configuring
the slpi tlmm registers. Also, move the initialization from arch_initcall
to module_initcall due to the dependency with clock initialization.

Change-Id: I678fbb790b3200c28227c58ee3611b37d655bb9f
Signed-off-by: Yadu MG <ymg@codeaurora.org>
Signed-off-by: Shreyas K K <shrekk@codeaurora.org>