Move the main() function from flashrom.c to cli_classic.c

The file flashrom.c is part of libflashrom and should thus not contain a
main() function, that would break compilation of all frontends using
libflashrom. Also, cli_classic.c is the right place anyway, as it's the
main() of the CLI tool.

Rename the simple wrapper cli_classic() in cli_classic.c to main(), as
it's not really needed.

Corresponding to flashrom svn r1417.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>

flashrom.c

@@ -1796,11 +1796,6 @@ void check_chip_supported(const struct flashchip *flash)
 	}
 }
 
-int main(int argc, char *argv[])
-{
-	return cli_classic(argc, argv);
-}
-
 /* FIXME: This function signature needs to be improved once doit() has a better
  * function signature.
  */