generic: fix broken ARM gc sections patch

generic: fix broken ARM gc sections patch

Upstream version of ARM gc sections skip eeping some section. It was
reported some kernel load hang hence restore what we original did and
introduce a new patch that add the additional entry on top of the
upstream version.

Fixes: #18500
Fixes: 7843f21c5120 ("generic: replace ARM gc sections patch with upstream version")
Tested-by: Stefan Kalscheuer <stefan@stklcode.de> (Turris Omnia)
Link: https://github.com/openwrt/openwrt/pull/18503
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>