Use the APSR_nzcv format of mrc. The clang integrated assembler doesn't
support the old usage of r15.

Sponsored by:	ABT Systems Ltd


git-svn-id: svn+ssh://svn.freebsd.org/base/head@275417 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Switch to unified syntax so these can be built with clang 3.5.

MFC after:	1 week
Sponsored by:	ABT Systems Ltd


git-svn-id: svn+ssh://svn.freebsd.org/base/head@275418 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f