i2c: meson: update doc description to fix build warnings
Add description for 'data' parameter and drop unused 'irq' memeber.
Here is the warnings:
drivers/i2c/busses/i2c-meson.c:103: warning: No description found for
parameter 'data'
drivers/i2c/busses/i2c-meson.c:103: warning: Excess struct member 'irq'
description in 'meson_i2c'
Reported-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Yixun Lan <yixun.lan@amlogic.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>