ARM: config: Refresh U8500 defconfig

This just updates the U8500 defconfig to reflect what has
happened in the Kconfig: DRM_PANEL_SONY_ACX424AKP is now
handled by DRM_PANEL_NOVATEK_NT35560, all ST sensors have
SPI version drivers that we don't use, and some debug
options moved around.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>