Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/include/linux/mtd/cfi.h b/include/linux/mtd/cfi.h
index 0d823f2..d249254 100644
--- a/include/linux/mtd/cfi.h
+++ b/include/linux/mtd/cfi.h
@@ -308,7 +308,7 @@
 	
 	addr = (cmd_ofs * type) * interleave;
 
-	/* Modify the unlock address if we are in compatiblity mode.
+	/* Modify the unlock address if we are in compatibility mode.
 	 * For 16bit devices on 8 bit busses
 	 * and 32bit devices on 16 bit busses
 	 * set the low bit of the alternating bit sequence of the address.