arm64: defconfig: enable pci-pwrctrl-generic as module

arm64: defconfig: enable pci-pwrctrl-generic as module

Enable the generic power control driver module since it's required
to power up the PCIe USB3 controller found on the Ayaneo Pocket S2
gaming console.

Acked-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20260319-topic-sm8650-ayaneo-pocket-s2-base-v6-1-797bf96df771@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>