.gitignore: move *.lex.c *.tab.[ch] patterns to the top-level .gitignore
Linux commit 5988930
These patterns are common to host programs that require lexer and parser.
Move them to the top .gitignore.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>