arm64: defconfig: enable drivers required by the Qualcomm SA8775P platform

arm64: defconfig: enable drivers required by the Qualcomm SA8775P platform

Enable the pinctrl, GCC clock and interconnect drivers in order to allow
booting SA8775P boards. The drivers need to be built-in for QUPv3 and
subsequently UART console to work.

Signed-off-by: Bartosz Golaszewski <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Reviewed-by: Eric Chanudet <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
Link: https://lore.kernel.org/r/[email protected]