patch 8.2.1292: AIDL filetype not recognized

Problem:    AIDL filetype not recognized.
Solution:   Add filetype detection. (Dominique Pellé, closes #6533)

runtime/filetype.vim

@@ -88,6 +88,9 @@ endif
 " AHDL
 au BufNewFile,BufRead *.tdf			setf ahdl
 
+" AIDL
+au BufNewFile,BufRead *.aidl			setf aidl
+
 " AMPL
 au BufNewFile,BufRead *.run			setf ampl
 

src/testdir/test_filetype.vim

@@ -54,6 +54,7 @@ let s:filename_checks = {
     \ 'acedb': ['file.wrm'],
     \ 'ada': ['file.adb', 'file.ads', 'file.ada', 'file.gpr'],
     \ 'ahdl': ['file.tdf'],
+    \ 'aidl': ['file.aidl'],
     \ 'alsaconf': ['.asoundrc', '/usr/share/alsa/alsa.conf', '/etc/asound.conf'],
     \ 'aml': ['file.aml'],
     \ 'ampl': ['file.run'],

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1292,
 /**/
     1291,
 /**/