CI: use amd64 EDK II firmware included with QEMU

QEMU (now) includes a prebuilt EDK II firmare in edk2-x86_64-code.fd.
Use that instead of requring a standalone uefi-edk2-qemu-x86_64 package.

Reviewed by:	imp
MFC after:	3 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D30915

.cirrus.yml

@@ -14,7 +14,7 @@ task:
   name: World and kernel amd64 build and boot smoke test
   timeout_in: 120m
   install_script:
-  - sh .cirrus-ci/pkg-install.sh qemu uefi-edk2-qemu-x86_64 llvm12
+  - sh .cirrus-ci/pkg-install.sh qemu llvm12
   setup_script:
   - uname -a
   - df -m

tools/boot/ci-qemu-test.sh

@@ -78,9 +78,8 @@ if [ -z "${OBJTOP}" ]; then
 fi
 
 # Locate the uefi firmware file used by qemu.
-: ${OVMF:=/usr/local/share/uefi-edk2-qemu/QEMU_UEFI_CODE-x86_64.fd}
+: ${OVMF:=/usr/local/share/qemu/edk2-x86_64-code.fd}
 if [ ! -r "${OVMF}" ]; then
-	echo "NOTE: UEFI firmware available in the uefi-edk2-qemu-x86_64 package" >&2
 	die "Cannot read UEFI firmware file ${OVMF}"
 fi