s390/Kconfig: 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/20220525120140.39534-1-juerg.haefliger@canonical.comSigned-off-by: Heiko Carstens <hca@linux.ibm.com>

arch/s390/Kconfig

@@ -736,11 +736,11 @@ config VFIO_AP
 	depends on S390_AP_IOMMU && VFIO_MDEV && KVM
 	depends on ZCRYPT
 	help
-		This driver grants access to Adjunct Processor (AP) devices
-		via the VFIO mediated device interface.
+	  This driver grants access to Adjunct Processor (AP) devices
+	  via the VFIO mediated device interface.
 
-		To compile this driver as a module, choose M here: the module
-		will be called vfio_ap.
+	  To compile this driver as a module, choose M here: the module
+	  will be called vfio_ap.
 
 endmenu