lib/decompressors: fix spelling mistakes

Fix some spelling mistakes in comments:
sentinal ==> sentinel
compresed ==> compressed
dependeny ==> dependency
immediatelly ==> immediately
dervied ==> derived
splitted ==> split
nore ==> not
independed ==> independent
asumed ==> assumed

Link: https://lkml.kernel.org/r/20210604085656.12257-1-thunder.leizhen@huawei.com
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/lib/decompress_unxz.c b/lib/decompress_unxz.c
index 25d59a9..a2f38e2 100644
--- a/lib/decompress_unxz.c
+++ b/lib/decompress_unxz.c
@@ -23,7 +23,7 @@
  * uncompressible. Thus, we must look for worst-case expansion when the
  * compressor is encoding uncompressible data.
  *
- * The structure of the .xz file in case of a compresed kernel is as follows.
+ * The structure of the .xz file in case of a compressed kernel is as follows.
  * Sizes (as bytes) of the fields are in parenthesis.
  *
  *    Stream Header (12)