phy: sun4i-usb: Fix a typo

Fix a typo in comments: wether -> whether.

Signed-off-by: Andrew Kreimer <[e-mail]>
Acked-by: Chen-Yu Tsai <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

include/linux/phy/phy-sun4i-usb.h

···
 /**
  * sun4i_usb_phy_set_squelch_detect() - Enable/disable squelch detect
  * @phy: reference to a sun4i usb phy
- * @enabled: wether to enable or disable squelch detect
+ * @enabled: whether to enable or disable squelch detect
  */
 void sun4i_usb_phy_set_squelch_detect(struct phy *phy, bool enabled);