TCPMv2: Enter USB4 mode if cable supports TBT_SS_U32_GEN1 speed
TCPMv2: Enter USB4 mode if cable supports TBT_SS_U32_GEN1 speed

If cable supports TBT_SS_U32_GEN1 i.e. 10Gbps per lane, enable
entering USB4 mode

BUG=b:175139039
BRANCH=None
TEST=Able to enter into USB4 mode with Thunderbolt Gen 1 cables

Signed-off-by: Ayushee Shah <5730d7ed61dc96fa04bcc2bc2e4ce32af5b2c19d@intel.com>
Change-Id: I10684f96e8d6e67b1086fbc560ec372e7f5b6cba
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2580851
Reviewed-by: Tanu Malhotra <88bcd522e76d112209f1cebbc3fc47e8f6ff3003@intel.com>
Reviewed-by: Abe Levkoy <2e1ad7039298f93262cf06bbb457275fb3e2ecb5@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec