arm64: dts: qcom: msm8916-samsung-a2015: Disable muic i2c pin bias

arm64: dts: qcom: msm8916-samsung-a2015: Disable muic i2c pin bias

Some versions of the firmware leave i2c gpios in a wrong state.
Add pinctrl that disables pin bias since external pull-up resistors
are present.

Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Fixes: 1329c1ab0730 ("arm64: dts: qcom: Add device tree for Samsung Galaxy A3U/A5U")
Signed-off-by: Nikita Travkin <nikitos.tr@gmail.com>
Link: https://lore.kernel.org/r/20201113175917.189123-6-nikitos.tr@gmail.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>