AMDGPU: Mark all unspecified CC functions in tests as amdgpu_kernel

Currently the default C calling convention functions are treated
the same as compute kernels. Make this explicit so the default
calling convention can be changed to a non-kernel.

Converted with perl -pi -e 's/define void/define amdgpu_kernel void/'
on the relevant test directories (and undoing in one place that actually
wanted a non-kernel).

llvm-svn: 298444
diff --git a/llvm/test/CodeGen/AMDGPU/private-memory-broken.ll b/llvm/test/CodeGen/AMDGPU/private-memory-broken.ll
index 8ba0b70..9b5f655 100644
--- a/llvm/test/CodeGen/AMDGPU/private-memory-broken.ll
+++ b/llvm/test/CodeGen/AMDGPU/private-memory-broken.ll
@@ -7,7 +7,7 @@
 
 declare i32 @foo(i32*) nounwind
 
-define void @call_private(i32 addrspace(1)* %out, i32 %in) nounwind {
+define amdgpu_kernel void @call_private(i32 addrspace(1)* %out, i32 %in) nounwind {
 entry:
   %tmp = alloca [2 x i32]
   %tmp1 = getelementptr [2 x i32], [2 x i32]* %tmp, i32 0, i32 0