xray: fix assembly macro definition
xray: fix assembly macro definition

  projects/compiler-rt/lib/xray/xray_trampoline_x86_64.S:33:7: error: unexpected token in '.endm' directive
  .endm SAVE_REGISTERS
	^
  projects/compiler-rt/lib/xray/xray_trampoline_x86_64.S:52:7: error: unexpected token in '.endm' directive
  .endm RESTORE_REGISTERS
	^

Remove the trailing name on the `.endm` which does not take the name of the
macro.  This should bring the compiler-rt build bot back into working state.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@289852 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt