pinctrl: qcom: allow selecting with ARCH_IPQ40XX

IPQ4019 pinctrl driver was moved to the dedicated Qualcomm pinctrl
directory, but the KConfig depends on ARCH_SNAPDRAGON only and thus
PINCTRL_QCOM_IPQ4019 cannot be selected when ARCH_IPQ40XX is used.

Fixes: 24d2908e ("pinctrl: qcom: move ipq4019 driver from mach-ipq40xx")
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>