mb/google/zork: correct USB2 phy TXVREFTUNE0 parameter name

From spec, [31:28] "HS DC Voltage Level Adjustment" is "TXVREFTUNE0".
correct rx_vref_tune -> tx_vref_tune

BUG=None
BRANCH=zork
TEST=emerge-zork coreboot

Signed-off-by: Kevin Chiu <kevin.chiu@quantatw.com>
Change-Id: I27003a952d8f8bdd8fe52af8a37010e23ee9cdfd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47735
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>

0 files changed, 0 insertions, 0 deletions