[OE-core] [PATCH 0/4] Fix builds for MIPS64 N32

[Dmitry Eremin-Solenikov]

Quite simple configuration (MIPS64 N32 image) fails to build (see below).
I have verified these patches in both single lib and in multilib cases.
Tri-lib images and SDK for MIPS build fine with these patches.

Current situation:

lumag at nexs:~/OE$ MACHINE=qemumips64n32 bitbake core-image-base
NOTE: Started PRServer with DBfile:
/home/lumag/OE/cache/prserv.sqlite3, IP: 127.0.0.1, PORT: 46391, PID:
15895
Loading cache: 100%
|########################################################################################################################|
ETA:  00:00:00
Loaded 1302 entries from dependency cache.
NOTE: Resolving any missing task queue dependencies
ERROR: Nothing RPROVIDES 'binutils-cross-canadian-mips64' (but
/home/lumag/OE/sources/openembedded-core/meta/recipes-core/packagegroups/packagegroup-cross-canadian.bb
RDEPENDS on or otherwise requires it)
NOTE: Runtime target 'binutils-cross-canadian-mips64' is unbuildable,
removing...
Missing or unbuildable dependency chain was: ['binutils-cross-canadian-mips64']
NOTE: Runtime target 'packagegroup-cross-canadian-qemumips64n32' is
unbuildable, removing...
Missing or unbuildable dependency chain was:
['packagegroup-cross-canadian-qemumips64n32',
'binutils-cross-canadian-mips64']
ERROR: Required build target 'core-image-base' has no buildable providers.
Missing or unbuildable dependency chain was: ['core-image-base',
'packagegroup-cross-canadian-qemumips64n32',
'binutils-cross-canadian-mips64']