s390/Kconfig.debug: fix indentation

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>
Link: https://lore.kernel.org/r/20220525120151.39594-1-juerg.haefliger@canonical.comSigned-off-by: Heiko Carstens <hca@linux.ibm.com>

arch/s390/Kconfig.debug

@@ -14,9 +14,9 @@ config DEBUG_ENTRY
 	  If unsure, say N.
 
 config CIO_INJECT
-       bool "CIO Inject interfaces"
-       depends on DEBUG_KERNEL && DEBUG_FS
-       help
-	This option provides a debugging facility to inject certain artificial events
-	and instruction responses to the CIO layer of Linux kernel. The newly created
-	debugfs user-interfaces will be at /sys/kernel/debug/s390/cio/*
+	bool "CIO Inject interfaces"
+	depends on DEBUG_KERNEL && DEBUG_FS
+	help
+	  This option provides a debugging facility to inject certain artificial events
+	  and instruction responses to the CIO layer of Linux kernel. The newly created
+	  debugfs user-interfaces will be at /sys/kernel/debug/s390/cio/*