perf/x86/Kconfig: Fix indentation in the Kconfig file

The convention for indentation seems to be a single tab. Help text is
further indented by an additional two whitespaces. Fix the lines that
violate these rules.

Signed-off-by: Juerg Haefliger <juerg.haefliger@canonical.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20220525133949.53730-1-juerg.haefliger@canonical.com

arch/x86/events/Kconfig

@@ -6,24 +6,24 @@ config PERF_EVENTS_INTEL_UNCORE
 	depends on PERF_EVENTS && CPU_SUP_INTEL && PCI
 	default y
 	help
-	Include support for Intel uncore performance events. These are
-	available on NehalemEX and more modern processors.
+	  Include support for Intel uncore performance events. These are
+	  available on NehalemEX and more modern processors.
 
 config PERF_EVENTS_INTEL_RAPL
 	tristate "Intel/AMD rapl performance events"
 	depends on PERF_EVENTS && (CPU_SUP_INTEL || CPU_SUP_AMD) && PCI
 	default y
 	help
-	Include support for Intel and AMD rapl performance events for power
-	monitoring on modern processors.
+	  Include support for Intel and AMD rapl performance events for power
+	  monitoring on modern processors.
 
 config PERF_EVENTS_INTEL_CSTATE
 	tristate "Intel cstate performance events"
 	depends on PERF_EVENTS && CPU_SUP_INTEL && PCI
 	default y
 	help
-	Include support for Intel cstate performance events for power
-	monitoring on modern processors.
+	  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