Input: cyapa_gen5 - fix obvious abuse of kernel-doc format

Fixes the following W=1 kernel build warning(s):

 drivers/input/mouse/cyapa_gen5.c:392: warning: Function parameter or member 'cyapa' not described in 'cyapa_i2c_pip_write'
 drivers/input/mouse/cyapa_gen5.c:392: warning: Function parameter or member 'buf' not described in 'cyapa_i2c_pip_write'
 drivers/input/mouse/cyapa_gen5.c:392: warning: Function parameter or member 'size' not described in 'cyapa_i2c_pip_write'
 drivers/input/mouse/cyapa_gen5.c:444: warning: Function parameter or member 'cyapa' not described in 'cyapa_empty_pip_output_data'
 drivers/input/mouse/cyapa_gen5.c:444: warning: Function parameter or member 'buf' not described in 'cyapa_empty_pip_output_data'
 drivers/input/mouse/cyapa_gen5.c:444: warning: Function parameter or member 'len' not described in 'cyapa_empty_pip_output_data'
 drivers/input/mouse/cyapa_gen5.c:444: warning: Function parameter or member 'func' not described in 'cyapa_empty_pip_output_data'

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20201104162427.2984742-4-lee.jones@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/mouse/cyapa_gen5.c

@@ -385,7 +385,7 @@ ssize_t cyapa_i2c_pip_read(struct cyapa *cyapa, u8 *buf, size_t size)
 	return size;
 }
 
-/**
+/*
  * Return a negative errno code else zero on success.
  */
 ssize_t cyapa_i2c_pip_write(struct cyapa *cyapa, u8 *buf, size_t size)
@@ -435,7 +435,7 @@ static enum cyapa_pm_stage cyapa_get_pip_pm_state(struct cyapa *cyapa)
 	return pm_stage;
 }
 
-/**
+/*
  * This function is aimed to dump all not read data in Gen5 trackpad
  * before send any command, otherwise, the interrupt line will be blocked.
  */