bzip2/lzma: move initrd/ramfs options out of BLK_DEV

Impact: Partial resolution of build failure

Move the initrd/initramfs configuration options from
drivers/block/Kconfig to usr/Kconfig, since they do not and should not
depend on CONFIG_BLK_DEV.  This fixes builds when CONFIG_BLK_DEV=n.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

drivers/block/Kconfig

@@ -358,33 +358,6 @@ config BLK_DEV_XIP
 	  will prevent RAM block device backing store memory from being
 	  allocated from highmem (only a problem for highmem systems).
 
-config RD_GZIP
-	bool "Initial ramdisk compressed using gzip"
-	default y
-	depends on BLK_DEV_INITRD=y
-	select DECOMPRESS_GZIP
-	help
-	  Support loading of a gzip encoded initial ramdisk or cpio buffer.
-	  If unsure, say Y.
-
-config RD_BZIP2
-	bool "Initial ramdisk compressed using bzip2"
-	default n
-	depends on BLK_DEV_INITRD=y
-	select DECOMPRESS_BZIP2
-	help
-	  Support loading of a bzip2 encoded initial ramdisk or cpio buffer
-	  If unsure, say N.
-
-config RD_LZMA
-	bool "Initial ramdisk compressed using lzma"
-	default n
-	depends on BLK_DEV_INITRD=y
-	select DECOMPRESS_LZMA
-	help
-	  Support loading of a lzma encoded initial ramdisk or cpio buffer
-	  If unsure, say N.
-
 config CDROM_PKTCDVD
 	tristate "Packet writing on CD/DVD media"
 	depends on !UML

usr/Kconfig

@@ -44,3 +44,30 @@ config INITRAMFS_ROOT_GID
 	  owned by group root in the initial ramdisk image.
 
 	  If you are not sure, leave it set to "0".
+
+config RD_GZIP
+	bool "Initial ramdisk compressed using gzip"
+	default y
+	depends on BLK_DEV_INITRD=y
+	select DECOMPRESS_GZIP
+	help
+	  Support loading of a gzip encoded initial ramdisk or cpio buffer.
+	  If unsure, say Y.
+
+config RD_BZIP2
+	bool "Initial ramdisk compressed using bzip2"
+	default n
+	depends on BLK_DEV_INITRD=y
+	select DECOMPRESS_BZIP2
+	help
+	  Support loading of a bzip2 encoded initial ramdisk or cpio buffer
+	  If unsure, say N.
+
+config RD_LZMA
+	bool "Initial ramdisk compressed using lzma"
+	default n
+	depends on BLK_DEV_INITRD=y
+	select DECOMPRESS_LZMA
+	help
+	  Support loading of a lzma encoded initial ramdisk or cpio buffer
+	  If unsure, say N.