kernel: make libsas depend on x86

It is only used by one driver that already depends on x86. Disabling it
prevents a few kilobytes of bloat from leaking into all targets via
CONFIG_BLK_DEV_BSG

Signed-off-by: Felix Fietkau <[email protected]>

SVN-Revision: 37254

package/kernel/linux/modules/block.mk

@@ -491,6 +491,7 @@ $(eval $(call KernelPackage,ide-it821x))
 
 define KernelPackage/libsas
   SUBMENU:=$(BLOCK_MENU)
+  DEPENDS:=@TARGET_x86
   TITLE:=SAS Domain Transport Attributes
   KCONFIG:=CONFIG_SCSI_SAS_LIBSAS \
 	CONFIG_SCSI_SAS_ATTRS \