.gitignore: Add files produced by TI platform

Add files produced by compilation of TI platforms:

*.ti-secure(-rom)
*.map
*-board-config
custMpk.pem
*.bin_*
*.fit
*.itb
tispl.bin_unsigned

Signed-off-by: Andrea Calabrese <andrea.calabrese@amarulasolutions.com>

.gitignore

@@ -10,6 +10,7 @@
 *.a
 *.asn1.[ch]
 *.bin
+*.bin[_.]*
 *.cfgout
 *.cover
 *.dtb
@@ -17,23 +18,27 @@
 *.dtb.S
 *.elf
 *.exe
+*.fit
 *.gcda
 *.gcno
 *.i
 *.img
+*.itb
 *.lex.c
 *.lst
+*.map
 *.mod.c
 *.mbx
 *.o
 *.o.*
 *.order
 *.patch
+*.pem
 *.s
 *.su
 *.swp
 *.tab.[ch]
-
+*.ti-*
 # Build tree
 /build*