x86: trivial clean up for arch/x86/Kconfig

Use tab.
Signed-off-by: NHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

arch/x86/Kconfig

@@ -822,13 +822,13 @@ config X86_MCE_AMD
 	   the DRAM Error Threshold.
 
 config X86_ANCIENT_MCE
-       def_bool n
-       depends on X86_32
-       prompt "Support for old Pentium 5 / WinChip machine checks"
-       ---help---
-	 Include support for machine check handling on old Pentium 5 or WinChip
-	 systems. These typically need to be enabled explicitely on the command
-	 line.
+	def_bool n
+	depends on X86_32
+	prompt "Support for old Pentium 5 / WinChip machine checks"
+	---help---
+	  Include support for machine check handling on old Pentium 5 or WinChip
+	  systems. These typically need to be enabled explicitely on the command
+	  line.
 
 config X86_MCE_THRESHOLD
 	depends on X86_MCE_AMD || X86_MCE_INTEL