Fix only first argument decoded on MIPS uClibc
Fix build with Clang on FreeBSD
mips: Move mipsel to mips (1/3)

- move references from mipsel to mips
- move references from mipsel.h to mips.h
mips: Move mipsel to mips (2/3)

- trailing whitespace cleanup in files to move
mips: Move mipsel to mips (3/3)

- move files from sysdeps/linux-gnu/mipsel to sysdeps/linux-gnu/mips
- move mipsel.h to mips.h