arm64: defconfig: Enable PCI generic host bridge by default
arm64: defconfig: Enable PCI generic host bridge by default

Now that pci-host-generic can be used under arm64, enable it by
default so that SBSA compliant systems can use it.

Cc: Will Deacon <b913f13ef92ac157955c954ccaaff7be065faba4@arm.com>
Cc: Catalin Marinas <15ce75b290ebaf27c3f9fd73ab848685ed3d8261@arm.com>
Signed-off-by: Liviu Dudau <de04510bbeaee3459a05bd6afc3320f61ec40764@arm.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs