nvramtool: Allow spaces in enumeration names

Change-Id: Id526e74f06fb15d4692d7b6edc8b5863f2d42c50
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/901
Tested-by: build bot (Jenkins)

util/nvramtool/accessors/layout-text.c

@@ -149,7 +149,7 @@ static const char enums_line_regex[] =
     /* followed by one or more whitespace characters */
     "[[:space:]]+"
     /* followed by a chunk of nonwhitespace for text field */
-    "([^[:space:]]+)"
+    "([[:print:]]*[^[:space:]])"
     /* followed by optional whitespace */
     "[[:space:]]*$";