[PATCH] DCSSBLK depends on CONFIG_S390

From: Dave Jones <davej@redhat.com>

This is probably useless on x86 for eg..  (Everything else in this file is
dependant on some other s390 feature, so only this one shows up).  Too bad
the drivers/s390/block stuff gets source'd at all on !s390.

drivers/s390/block/Kconfig

+if ARCH_S390
+
 comment "S/390 block device drivers"
 	depends on ARCH_S390
 
@@ -62,3 +64,5 @@ config DASD_CMB
 	  ioctl functions specific to the dasd driver.
 	  This is only needed if you want to use applications written for
 	  linux-2.4 dasd channel measurement facility interface.
+
+endif