ARM: dts: qcom: apq8064 - Move i2c1 pinctrl to apq8064.dtsi

I2C1 pinctrl is not really specific to a board, moving to SOC dtsi would
avoid redefining this in every board.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Kumar Gala <galak@codeaurora.org>