Fix misc spelling errors found by lintian

Signed-off-by: Loïc Minier <loic.minier@linaro.org>
diff --git a/fs/jffs2/jffs2_nand_1pass.c b/fs/jffs2/jffs2_nand_1pass.c
index 3982003..740f787 100644
--- a/fs/jffs2/jffs2_nand_1pass.c
+++ b/fs/jffs2/jffs2_nand_1pass.c
@@ -350,7 +350,7 @@
 #endif
 			default:
 				/* unknown */
-				putLabeledWord("UNKOWN COMPRESSION METHOD = ", inode->compr);
+				putLabeledWord("UNKNOWN COMPRESSION METHOD = ", inode->compr);
 				return -1;
 			}
 		}