patch 9.1.0906: filetype: Nvidia PTX files are not recognized

Problem:  filetype: Nvidia PTX files are not recognized
Solution: detect '*.ptx' files as ptx filetype (Yinzuo Jiang)

Reference: https://docs.nvidia.com/cuda/parallel-thread-execution/

closes: #16171

Signed-off-by: Yinzuo Jiang <jiangyinzuo@foxmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 4cf6862..c230d4f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    906,
+/**/
     905,
 /**/
     904,