patch 9.1.0234: filetype: support for Intel HEX files is lacking

Problem:  filetype: support for Intel HEX files is lacking
Solution: Add more file extensions that are typical for Intel HEX files
          (Wu, Zhenyu)

Reference: https://en.wikipedia.org/wiki/Intel_HEX

closes: #14355

Signed-off-by: Wu, Zhenyu <wuzhenyu@ustc.edu>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 1f748c8..a5395e9 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    234,
+/**/
     233,
 /**/
     232,