[Offload][PGO] Fix new GPU PGO tests (llvm#143645)

`pgo_atomic_teams.c` and `pgo_atomic_threads.c` currently are set to run
on NVPTX despite the changes for that target not being upstreamed yet.
This patch also replaces instances of `llvm-profdata` with `%profdata`
in those tests.

Author: EthanLuisMcDonough

offload/test/offloading/gpupgo/pgo_atomic_teams.c

@@ -3,7 +3,7 @@
 // RUN:     -Xarch_device -fprofile-update=atomic
 // RUN: env LLVM_PROFILE_FILE=%basename_t.llvm.profraw \
 // RUN:     %libomptarget-run-generic 2>&1
-// RUN: llvm-profdata show --all-functions --counts \
+// RUN: %profdata show --all-functions --counts \
 // RUN:     %target_triple.%basename_t.llvm.profraw | \
 // RUN:     %fcheck-generic --check-prefix="LLVM-PGO"
 
@@ -12,11 +12,11 @@
 // RUN:     -Xarch_device -fprofile-update=atomic
 // RUN: env LLVM_PROFILE_FILE=%basename_t.clang.profraw \
 // RUN:     %libomptarget-run-generic 2>&1
-// RUN: llvm-profdata show --all-functions --counts \
+// RUN: %profdata show --all-functions --counts \
 // RUN:     %target_triple.%basename_t.clang.profraw | \
 // RUN:     %fcheck-generic --check-prefix="CLANG-PGO"
 
-// REQUIRES: gpu
+// REQUIRES: amdgpu
 // REQUIRES: pgo
 
 int test1(int a) { return a / 2; }

offload/test/offloading/gpupgo/pgo_atomic_threads.c

@@ -3,7 +3,7 @@
 // RUN:     -Xarch_device -fprofile-update=atomic
 // RUN: env LLVM_PROFILE_FILE=%basename_t.llvm.profraw \
 // RUN:     %libomptarget-run-generic 2>&1
-// RUN: llvm-profdata show --all-functions --counts \
+// RUN: %profdata show --all-functions --counts \
 // RUN:     %target_triple.%basename_t.llvm.profraw | \
 // RUN:     %fcheck-generic --check-prefix="LLVM-PGO"
 
@@ -12,11 +12,11 @@
 // RUN:     -Xarch_device -fprofile-update=atomic
 // RUN: env LLVM_PROFILE_FILE=%basename_t.clang.profraw \
 // RUN:     %libomptarget-run-generic 2>&1
-// RUN: llvm-profdata show --all-functions --counts \
+// RUN: %profdata show --all-functions --counts \
 // RUN:     %target_triple.%basename_t.clang.profraw | \
 // RUN:     %fcheck-generic --check-prefix="CLANG-PGO"
 
-// REQUIRES: gpu
+// REQUIRES: amdgpu
 // REQUIRES: pgo
 
 int test1(int a) { return a / 2; }