toolchain: musl: fix symlink for ldd

ld-musl-*.so* is a symlink "broken" for the hostsystem, so wildcard
will skip it, causing LD_MUSL_NAME to empty and the ldd symlink pointing
to ../../lib directly.
This causes sysupgrade failing to copy any linked libaries and
consequently failing to run anything after switching to ram disk.

Fix this by creating a symlink directly pointing to where ld-musl-*.so*
points to.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43314 3c298f89-4303-0410-b956-a3cf2f4a3e73
base-files: supress errors from ldd

ldd might be called for shell scrips during sysupgrade, causing it to
complain that they are not a dynamic executables.

This is a harmless error, so supress it to avoid confusing about them
being serious ones.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43315 3c298f89-4303-0410-b956-a3cf2f4a3e73
kernel: remove gpio-pwm kmod definition

r37490 removed the actual driver but left the kmod definition intact,
causing the build system hapily creating an empty package for it.
Remove it also to not make it seem as if it still exists.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43316 3c298f89-4303-0410-b956-a3cf2f4a3e73