Add movw and movt relocations to the list of relocations against function
names that must nnot be adjusted. This fixes a bug where code such as:
movw r2, :lower16:symbol
movt r2, :upper16:symbol

It is common for clang to generate such code when targeting armv7.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@272519 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f