ipxe: update to aug 2020 snapshot.

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Merge remote-tracking branch 'remotes/kraxel/tags/sirius/ipxe-20200908-pull-request' into staging

ipxe: update to aug 2020 snapshot.

# gpg: Signature made Tue 08 Sep 2020 07:09:26 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/sirius/ipxe-20200908-pull-request:
  ipxe: update binaries
  ipxe: drop ia32 efi roms
  ipxe: update submodule

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

roms/Makefile

@@ -113,7 +113,6 @@ efirom: $(patsubst %,efi-rom-%,$(pxerom_variants))
 efi-rom-%: build-pxe-roms build-efi-roms edk2-basetools
 	$(EDK2_EFIROM) -f "0x$(VID)" -i "0x$(DID)" -l 0x02 \
 		-b ipxe/src/bin/$(VID)$(DID).rom \
-		-ec ipxe/src/bin-i386-efi/$(VID)$(DID).efidrv \
 		-ec ipxe/src/bin-x86_64-efi/$(VID)$(DID).efidrv \
 		-o ../pc-bios/efi-$*.rom
 
@@ -125,7 +124,6 @@ build-pxe-roms:
 build-efi-roms: build-pxe-roms
 	$(MAKE) -C ipxe/src CONFIG=qemu \
 		CROSS_COMPILE=$(x86_64_cross_prefix) \
-		$(patsubst %,bin-i386-efi/%.efidrv,$(pxerom_targets)) \
 		$(patsubst %,bin-x86_64-efi/%.efidrv,$(pxerom_targets))
 
 # Build scripts can pass compiler/linker flags to the EDK2

roms/ipxe

@@ -1 +1 @@
-Subproject commit de4565cbe76ea9f7913a01f331be3ee901bb6e17
+Subproject commit 4bd064de239dab2426b31c9789a1f4d78087dc63