uml: fix CONFIG_RAW dependencies

Add the BLOCK dependency for RAW_DRIVER, to match what's in
drivers/char/Kconfig.  Also, while we're there, update the alleged
obsolesence of RAW_DRIVER since it doesn't seem to be going away any
time soon.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/um/Kconfig.char

@@ -145,14 +145,14 @@ config LEGACY_PTYS
 	  systems, it is safe to say N.
 
 config RAW_DRIVER
-        tristate "RAW driver (/dev/raw/rawN) (OBSOLETE)"
+        tristate "RAW driver (/dev/raw/rawN)"
+	depends on BLOCK
         help
           The raw driver permits block devices to be bound to /dev/raw/rawN.
           Once bound, I/O against /dev/raw/rawN uses efficient zero-copy I/O.
           See the raw(8) manpage for more details.
 
-          The raw driver is deprecated and will be removed soon.
-          Applications should simply open the device (eg /dev/hda1)
+          Applications should preferably open the device (eg /dev/hda1)
           with the O_DIRECT flag.
 
 config MAX_RAW_DEVS