perf regs: Remove __weak attributive arch_sdt_arg_parse_op() function

In line with the previous patch, the __weak arch_sdt_arg_parse_op()
function is removed.

Architectural-specific implementations in the arch/ directory are now
converted into sub-functions within the util/perf-regs-arch/ directory.

The perf_sdt_arg_parse_op() function will call these sub-functions based
on the EM_HOST.

This change enables cross-architecture calls to arch_sdt_arg_parse_op().

No functional changes are intended.

Suggested-by: Ian Rogers <irogers@google.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Guo Ren <guoren@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <pjw@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Falcon <thomas.falcon@intel.com>
Cc: Will Deacon <will@kernel.org>
Cc: Xudong Hao <xudong.hao@intel.com>
Cc: Zide Chen <zide.chen@intel.com>
[ Fixed up somme fuzz with powerpc and x86 Build files wrt removing perf_regs.o ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Author: Dapeng Mi

tools/perf/arch/arm64/util/Build

@@ -7,6 +7,5 @@ perf-util-y += header.o
 perf-util-y += hisi-ptt.o
 perf-util-y += machine.o
 perf-util-y += mem-events.o
-perf-util-y += perf_regs.o
 perf-util-y += pmu.o
 perf-util-y += tsc.o

tools/perf/arch/arm64/util/perf_regs.c

@@ -1,5 +1,4 @@
 perf-util-y += header.o
-perf-util-y += perf_regs.o
 perf-util-y += mem-events.o
 perf-util-y += pmu.o
 perf-util-y += sym-handling.o

tools/perf/arch/powerpc/util/Build

@@ -1,7 +1,6 @@
 perf-util-y += header.o
 perf-util-y += tsc.o
 perf-util-y += pmu.o
-perf-util-y += perf_regs.o
 perf-util-y += topdown.o
 perf-util-y += machine.o
 perf-util-y += event.o