pinctrl: qcom: Use platform_irq_count() instead of of_irq_count()

of_irq_count() is not an exported symbol (and it shouldn't be
used by platform drivers anyway) so use platform_irq_count()
instead. This allows us to make the qcom pinctrl drivers modular
again.

Change-Id: Ia2d8a0fc303af5ce6d34703f63bc61dfa0e5d148
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Andy Gross <andy.gross@linaro.org>
Cc: Bjorn Andersson <bjorn@kryo.se>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Git-commit: a5ea13f025e7bf3bb280a22f5fe63b7159358932
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


Signed-off-by: Fenglin Wu <fenglinw@codeaurora.org>