Revert: r215698 - Current implementation of c.cond.fmt instructions only...

Revert: r215698 - Current implementation of c.cond.fmt instructions only accept default cc0 register...

It causes a number of regressions when -fintegrated-as is enabled. This happens
because there are codegen-only instructions that incorrectly uses the first
operand as the encoding for the $fcc register. The regressions do not occur when
-via-file-asm is also given.

llvm-svn: 215847