MAINTAINERS: Add CCA and pKVM CoCO guest support to the ARM64 entry

Commits 7999edc ("virt: arm-cca-guest: TSM_REPORT support for
realm") and a06c3fa ("drivers/virt: pkvm: Add initial support for
running as a protected guest") added arm64 guest-side support for
running in CCA and pKVM confidential computing environments
respectively.

Unfortunately, these changes were not accompanied by a MAINTAINERS
entry and so aren't automatically picked up by the get_maintainer.pl
script. Since the initial support was merged via the arm64 tree, extend
the ARM64 entry to cover the two new directories.

Cc: Marc Zyngier <[email protected]>
Cc: Oliver Upton <[email protected]>
Cc: Suzuki K Poulose <[email protected]>
Signed-off-by: Will Deacon <[email protected]>
Acked-by: Suzuki K Poulose <[email protected]>
Acked-by: Catalin Marinas <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>

Author: willdeacon

MAINTAINERS

@@ -3376,6 +3376,8 @@ S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git
 F:	Documentation/arch/arm64/
 F:	arch/arm64/
+F:	drivers/virt/coco/arm-cca-guest/
+F:	drivers/virt/coco/pkvm-guest/
 F:	tools/testing/selftests/arm64/
 X:	arch/arm64/boot/dts/