[test][llvm-objcopy/mac] Move test to new file

Follow up from https://reviews.llvm.org/D118526

Differential Revision: https://reviews.llvm.org/D119149

llvm/test/tools/llvm-objcopy/MachO/load-commands.yaml

@@ -0,0 +1,19 @@
+--- !mach-o
+FileHeader:
+  magic:           0xFEEDFACE
+  cputype:         0x0000000C
+  cpusubtype:      0x00000009
+  filetype:        0x00000001
+  ncmds:           1
+  sizeofcmds:      16
+  flags:           0x00002000
+LoadCommands:
+  - cmd:          LC_LINKER_OPTION
+    cmdsize:      16
+    count:        1
+    PayloadBytes: [ 0x2D, 0x6C, 0x63, 0x0 ]
+...
+
+# RUN: yaml2obj %s > %t
+# RUN: llvm-objcopy %t %t.copy
+# RUN: cmp %t %t.copy

llvm/test/tools/llvm-objcopy/MachO/redefine-symbol.s

@@ -43,7 +43,6 @@
 # RUN: llvm-objcopy --strip-symbol _ba --redefine-sym _foo=_ba %t %t.noba
 # RUN: llvm-readobj --symbols %t.noba | FileCheck %s --check-prefix=NOTSTRIPPED
 
-.linker_option "-lc"
 .globl _func
 _func: