[PATCH] initramfs should not depend on CONFIG_BLOCK

initramfs ended up depending on BLOCK:

  INITRAMFS_SOURCE <-- BLK_DEV_INITRD <-- BLOCK

This inhibits use of customized-initramfs-over-ramfs without block layer
(ramfs would still be enabled), useful in embedded applications.

Move BLK_DEV_INITRD out of 'drivers/block/Kconfig' and into 'init/Kconfig',
make it unconditional.

Signed-off-by: Dimitri Gorokhovik <dimitri.gorokhovik@free.fr>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/block/Kconfig

@@ -406,22 +406,6 @@ config BLK_DEV_RAM_BLOCKSIZE
 	  setups function - apparently needed by the rd_load_image routine
 	  that supposes the filesystem in the image uses a 1024 blocksize.
 
-config BLK_DEV_INITRD
-	bool "Initial RAM filesystem and RAM disk (initramfs/initrd) support"
-	depends on BROKEN || !FRV
-	help
-	  The initial RAM filesystem is a ramfs which is loaded by the
-	  boot loader (loadlin or lilo) and that is mounted as root
-	  before the normal boot procedure. It is typically used to
-	  load modules needed to mount the "real" root file system,
-	  etc. See <file:Documentation/initrd.txt> for details.
-
-	  If RAM disk support (BLK_DEV_RAM) is also included, this
-	  also enables initial RAM disk (initrd) support and adds
-	  15 Kbytes (more on some other architectures) to the kernel size.
-
-	  If unsure say Y.
-
 config CDROM_PKTCDVD
 	tristate "Packet writing on CD/DVD media"
 	depends on !UML

init/Kconfig

@@ -304,6 +304,22 @@ config RELAY
 
 	  If unsure, say N.
 
+config BLK_DEV_INITRD
+	bool "Initial RAM filesystem and RAM disk (initramfs/initrd) support"
+	depends on BROKEN || !FRV
+	help
+	  The initial RAM filesystem is a ramfs which is loaded by the
+	  boot loader (loadlin or lilo) and that is mounted as root
+	  before the normal boot procedure. It is typically used to
+	  load modules needed to mount the "real" root file system,
+	  etc. See <file:Documentation/initrd.txt> for details.
+
+	  If RAM disk support (BLK_DEV_RAM) is also included, this
+	  also enables initial RAM disk (initrd) support and adds
+	  15 Kbytes (more on some other architectures) to the kernel size.
+
+	  If unsure say Y.
+
 if BLK_DEV_INITRD
 
 source "usr/Kconfig"