tools/patchelf: bump to use latest master

Recent ABI_VERSION commits make use of patchelf. It was discovered that
with patchelf 0.10(and even 0.12) various big endian targets fail to
link against libubox SO that was processed through patchelf. Using
latest master patchelf fixes those link errors.

Potential commits affecting big-endian processing
https://github.com/NixOS/patchelf/commit/884eccc4f061a3dbdbe63a4c73f1cc9bbf77fa7d
https://github.com/NixOS/patchelf/commit/d148bae6c1291b93d660a156a1756670069cd8cc

Recent builds with failures:
http://buildbot.openwrt.org/master/images/builders/lantiq%2Fxrx200/builds/682
http://buildbot.openwrt.org/master/images/builders/ath79%2Fmikrotik/builds/449



Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>