cbfstool: Factor out compression algorithm list

Parse compression algorithm arguments using a single list.

Change-Id: Idc5b14a53377b29964f24221e42db6e09a497d48
Signed-off-by: Sol Boucher <solb@chromium.org>
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Change-Id: I1a117a9473e895feaf455bb30d0f945f57de51eb
Original-Signed-off-by: Sol Boucher <solb@chromium.org>
Reviewed-on: http://review.coreboot.org/10931
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

util/cbfstool/cbfs_image.h

@@ -32,6 +32,10 @@ struct cbfs_image {
 	struct cbfs_header header;
 };
 
+/* Given the string name of a compression algorithm, return the corresponding
+ * enum comp_algo if it's supported, or a number < 0 otherwise. */
+int cbfs_parse_comp_algo(const char *name);
+
 /* Given a pointer, serialize the header from host-native byte format
  * to cbfs format, i.e. big-endian. */
 void cbfs_put_header(void *dest, const struct cbfs_header *header);