xtensa: ISS: add BLOCK dependency to BLK_DEV_SIMDISK

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

arch/xtensa/Kconfig

@@ -367,7 +367,7 @@ config BUILTIN_DTB
 config BLK_DEV_SIMDISK
 	tristate "Host file-based simulated block device support"
 	default n
-	depends on XTENSA_PLATFORM_ISS
+	depends on XTENSA_PLATFORM_ISS && BLOCK
 	help
 	  Create block devices that map to files in the host file system.
 	  Device binding to host file may be changed at runtime via proc