Merge in edk2 stable202502 to pick up latest definitions. This is a
subset import, as outlined in FREEBSD-update, since the full thing has
only gotten larger.

I also had to disable building of libefivar for i386 build. The
precondition for EDK2 isn't met by our ABI there. And we can't call
EFIRT there anyway. We normally don't build the EFI binaries for i386
anyway. We likely never should have built this, but disabling one
library in 32-bit mode is hard.

I also had to ifdef the L" and L' asserts on _STANDALONE. In the boot
loader build enviornment, we met these conditions. All the other places
we do not. But we also are careful to massage the code so that we do not
depend on these preconditions.

Sponsored by:		Netflix

We use these to compile libefivar. The particular motivation for this update is
the inclusion of the RISC-V machine definitions that allow us to build the
library on the platform. This support could easily have been submitted as a
small local diff, but the timing of the release coincided with this work, and
it has been over 3 years since these sources were initially imported.

Note that this comes with a license change from regular BSD 2-clause to the
BSD+Patent license. This has been approved by core@ for this particular
project [1].

As with the original import, we retain only the subset of headers that we
actually need to build libefivar. I adapted imp@'s process slightly for this
update:

    # Generate list of the headers needed to build
    cp -r ../vendor/edk2/dist/MdePkg/Include sys/contrib/edk2
    cd lib/libefivar
    make
    pushd `make -V .OBJDIR`
    cat .depend*.o | grep sys/contrib | cut -d' ' -f 3 |
        sort -u | sed -e 's=/full/path/sys/contrib/edk2/==' > /tmp/xxx
    popd

    # Merge the needed files
    cd ../../sys/contrib/edk2
    svn revert -R .
    for i in `cat /tmp/xxx`; do
        svn merge -c VendorRevision svn+ssh://repo.freebsd.org/base/vendor/edk2/dist/MdePkg/$i $i
    done
    svn merge -c VendorRevision svn+ssh://repo.freebsd.org/base/vendor/edk2/dist/MdePkg/MdePkg.dec MdePkg.dec

[1] https://www.freebsd.org/internal/software-license.html

from the .depend files after the build:
	cp -r ../vendor/edk2/MdePkg/Include sys/contrib/edk2
	cd lib/libefivar
	make
	pushd `make -V .OBJDIR`
	cat .depend*.o | grep sys/contrib | cut -d' ' -f 3 |
		sort -u | sed -e 's=/full/path/sys/contrib/edk2/==' > /tmp/xxx
	popd
	cd ../../sys/contrib/edk2
	rm -rf Include
	for i in `cat /tmp/xxx`; do
		svn cp svn+ssh://repo.freebsd.org/base/vendor/edk2/dist/MdePkg/$i $i
	done
	svn cp svn+ssh://repo.freebsd.org/base/vendor/edk2/dist/MdePkg/MdePkg.dec .

The original EDK2 repo is ~265MB, the MdePkg is ~23MB, all
MdePkg/Includes is ~7MB and this minimal set is ~1.3MB.

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