ARM: dts: qcom: msm8226: Add pinctrl for sdhci nodes

Also remove the pinctrl from qcom-apq8026-lg-lenok as it is the same
value as the generic pinctrl.

Signed-off-by: Luca Weiss <luca@z3ntu.xyz>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220216212433.1373903-4-luca@z3ntu.xyz