perf/x86: Move Kconfig.perf and other perf configuration bits to events/Kconfig

Ingo says:

 "If we do a separate file we should have it in arch/x86/events/Kconfig
  (not in arch/x86/Kconfig.perf), and also move some of the other bits,
  such as PERF_EVENTS_AMD_POWER?"

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

arch/x86/Kconfig

@@ -1038,7 +1038,7 @@ config X86_THERMAL_VECTOR
 	def_bool y
 	depends on X86_MCE_INTEL
 
-source "arch/x86/Kconfig.perf"
+source "arch/x86/events/Kconfig"
 
 config X86_LEGACY_VM86
 	bool "Legacy VM86 support"
@@ -1204,15 +1204,6 @@ config MICROCODE_OLD_INTERFACE
 	def_bool y
 	depends on MICROCODE
 
-config PERF_EVENTS_AMD_POWER
-	depends on PERF_EVENTS && CPU_SUP_AMD
-	tristate "AMD Processor Power Reporting Mechanism"
-	---help---
-	  Provide power reporting mechanism support for AMD processors.
-	  Currently, it leverages X86_FEATURE_ACC_POWER
-	  (CPUID Fn8000_0007_EDX[12]) interface to calculate the
-	  average power consumption on Family 15h processors.
-
 config X86_MSR
 	tristate "/dev/cpu/*/msr - Model-specific register support"
 	---help---

arch/x86/events/Kconfig

@@ -24,4 +24,13 @@ config PERF_EVENTS_INTEL_CSTATE
 	Include support for Intel cstate performance events for power
 	monitoring on modern processors.
 
+config PERF_EVENTS_AMD_POWER
+	depends on PERF_EVENTS && CPU_SUP_AMD
+	tristate "AMD Processor Power Reporting Mechanism"
+	---help---
+	  Provide power reporting mechanism support for AMD processors.
+	  Currently, it leverages X86_FEATURE_ACC_POWER
+	  (CPUID Fn8000_0007_EDX[12]) interface to calculate the
+	  average power consumption on Family 15h processors.
+
 endmenu