phy: ti: tusb1210: Drop tusb->vendor_specific2 != 0 check from tusb1210_power_on()

Since commit eb445a15

 ("phy: tusb1210: use bitmasks to set
VENDOR_SPECIFIC2") tusb->vendor_specific2 always contains a valid value
so there no need to check that it is set.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20220213130524.18748-8-hdegoede@redhat.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>