perf build: Change the clang check back to 12.0.1

This serves as a revert for this patch:

  https://lore.kernel.org/linux-perf-users/ZuGL9ROeTV2uXoSp@x1/

Signed-off-by: Howard Chu <[email protected]>
Tested-by: James Clark <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Alan Maguire <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Kan Liang <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

Author: Sberm

tools/perf/Makefile.config

@@ -704,8 +704,8 @@ ifeq ($(BUILD_BPF_SKEL),1)
     BUILD_BPF_SKEL := 0
   else
     CLANG_VERSION := $(shell $(CLANG) --version | head -1 | sed 's/.*clang version \([[:digit:]]\+.[[:digit:]]\+.[[:digit:]]\+\).*/\1/g')
-    ifeq ($(call version-lt3,$(CLANG_VERSION),16.0.6),1)
-      $(warning Warning: Disabled BPF skeletons as at least $(CLANG) version 16.0.6 is reported to be a working setup with the current of BPF based perf features)
+    ifeq ($(call version-lt3,$(CLANG_VERSION),12.0.1),1)
+      $(warning Warning: Disabled BPF skeletons as reliable BTF generation needs at least $(CLANG) version 12.0.1)
       BUILD_BPF_SKEL := 0
     endif
   endif