For panther and elm, sys-boot/coreboot-0.0.1-r2049 fails to build with binutils 2.27.

On panther:

$ emerge-panther sys-boot/coreboot
...
/usr/x86_64-pc-linux-gnu/i686-pc-linux-gnu/binutils-bin/2.27/ld.bfd.real: 2api.o: access beyond end of merged section (1928790328)
/usr/x86_64-pc-linux-gnu/i686-pc-linux-gnu/binutils-bin/2.27/ld.bfd.real: 2api.o: access beyond end of merged section (3888991178)
/usr/x86_64-pc-linux-gnu/i686-pc-linux-gnu/binutils-bin/2.27/ld.bfd.real: 2api.o: access beyond end of merged section (782091907)
/usr/x86_64-pc-linux-gnu/i686-pc-linux-gnu/binutils-bin/2.27/ld.bfd.real: build/romstage/external/vboot_reference/../../../external/vboot_reference/vboot_fw20.a(2api.o)(.debug_info+0xc68): reloc against `.debug_str': error 2
make: *** [src/arch/x86/Makefile.inc:265: build/cbfs/fallback/romstage.debug] Error 1


On elm:

$ emerge-elm sys-boot/coreboot
...
bl31/aarch64/runtime_exceptions.S:272: Error: non-constant expression in ".if" statement
bl31/aarch64/runtime_exceptions.S:276: Error: non-constant expression in ".if" statement
bl31/aarch64/runtime_exceptions.S:284: Error: non-constant expression in ".if" statement
make[1]: *** [Makefile:533: /build/elm/tmp/portage/sys-boot/coreboot-0.0.1-r2049/work/coreboot-0.0.1/build/3rdparty/arm-trusted-firmware/bl31/runtime_exceptions.o] Error 1