ARM: dts: qcom: add MSM8660 GSBI6 and GSBI7

This adds the GSBI6 and GSBI7 IO blocks to the MSM8660 DTSI file.
On the APQ8060 DragonBoard, GSBI6 DM is used for Bluetooth UART,
and GSBI7 I2C is used for FM radio I2C.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>