ARM: dts: fix the MSM8660 RTC base address

The RTC was defined on 0x11d but on the MSM8660/APQ8060 it is
actually on 0x1e8. We were saved by the fact that the driver does
not use the reg parameter: instead it uses the compatible string
to figure out where the RTC is.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>