ARM: ux500: Add spi and ssp devices to the VAPE PM domain

The spi-pl022 driver handle these devices properly from a runtime PM
perspective. Therefore, let's add them into VAPE PM domain for ux500.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>