[AMDGPU] Update RUN line in test (NFC)

Author: mbrkusanin

llvm/test/CodeGen/AMDGPU/code-size-estimate.ll

@@ -1,6 +1,6 @@
 ; RUN: llc -march=amdgcn -mcpu=gfx900 -show-mc-encoding < %s | FileCheck -check-prefixes=CHECK,GFX9 %s
 ; RUN: llc -march=amdgcn -mcpu=gfx1030 -show-mc-encoding < %s | FileCheck -check-prefixes=CHECK,GFX10 %s
-; RUN: llc -march=amdgcn -mcpu=gfx1100 -show-mc-encoding < %s | FileCheck -check-prefixes=CHECK,GFX11 %s
+; RUN: llc -march=amdgcn -mcpu=gfx1100 -show-mc-encoding < %s | FileCheck -check-prefixes=CHECK,GFX11,GFX1100 %s
 ; RUN: llc -march=amdgcn -mcpu=gfx1150 -show-mc-encoding < %s | FileCheck -check-prefixes=CHECK,GFX11,GFX1150 %s
 
 declare float @llvm.fabs.f32(float)