[PATCH] I2C: remove <linux/delay.h> from via686a

In my cross-reference checking of sysfs names, the via686a needs
special case treatment as it the only driver expands S_IWUSR to
00200 with gcc -E.  (00200 is the correct value for S_IWUSR).

This is caused by the driver including <linux/delay.h>, it compiles
fine without that header but I am unable to test drive the change.

Signed-off-by: Grant Coady <gcoady@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>