bzip2/lzma: quiet Kconfig warning for INITRAMFS_COMPRESSION_NONE

Impact: quiet Kconfig warning

It appears that Kconfig simply has no way to provide defaults for
entries that exist inside a conditionalized choice block.
Fortunately, it turns out we don't actually ever use
CONFIG_INITRAMFS_COMPRESSION_NONE, so we can just drop it for
everything outside the choice block.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>

usr/Kconfig

diff --git a/usr/Kconfig b/usr/Kconfig
index 588c588..1c3039f 100644
--- a/usr/Kconfig
+++ b/usr/Kconfig
@@ -72,10 +72,8 @@
 	  Support loading of a LZMA encoded initial ramdisk or cpio buffer
 	  If unsure, say N.
 
-if INITRAMFS_SOURCE!=""
-
 choice
-	prompt "Built-in initramfs compression mode"
+	prompt "Built-in initramfs compression mode" if INITRAMFS_SOURCE!=""
 	help
 	  This option decides by which algorithm the builtin initramfs
 	  will be compressed.  Several compression algorithms are
@@ -134,14 +132,3 @@
 	  smaller with LZMA in comparison to gzip.
 
 endchoice
-
-endif
-
-if INITRAMFS_SOURCE=""
-# The builtin initramfs is so small so we don't want to bug the user...
-
-config INITRAMFS_COMPRESSION_NONE
-	bool
-	default y
-
-endif