Mushu: Enable TCPMv2
Mushu: Enable TCPMv2

Transitioning Mushu to TCPMv2.  Mushu needs some features that are
only going to be available on the new stack.  We need to still use PD
2.0 because we have a parade TCPC however, which is not compatible
with the PD 3.0 spec.

BUG=b:155118660
BRANCH=None
TEST=flash onto mushu board
     Plug in charger.  See the following output, which
     verified that we are using the new stack:

     2020-05-05 14:59:06 [269.461931 C1: Attached.SNK]
     2020-05-05 14:59:06 [269.471130 C1: PE_SNK_Startup]
     2020-05-05 14:59:06 [269.473331 VBUS p1 1]
     2020-05-05 14:59:06 [269.474353 C1: PE_SNK_Discovery]
     2020-05-05 14:59:06 [269.476796 New charge port: C1]
     2020-05-05 14:59:06 [269.482324 C1: PE_SNK_Wait_for_Capabilities]
     2020-05-05 14:59:06 bq25710: no battery, skip ICO enable
     2020-05-05 14:59:06 [269.486195 CL: p1 s1 i3000 v5000]
     2020-05-05 14:59:06 [269.556396 AC on]
     2020-05-05 14:59:06 [269.577137 C1: PE_SNK_Evaluate_Capability]
     2020-05-05 14:59:06 [269.577801 C1: PE_SNK_Select_Capability]
     2020-05-05 14:59:06 C1 Req [4] 15000mV 3000mA

Signed-off-by: Shelley Chen <ab7b8cc85923339aed379eb1c5cc4dccfd2eb3d7@google.com>
Change-Id: I796c8de9a7f7f4d9f5c139fbe0fd09cd64f933dc
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2182043
Reviewed-by: Jett Rink <9d4aef0593e6843318d99df31597fb6153b89787@chromium.org>
Reviewed-by: Tim Wawrzynczak <86444811eee8c2cb29e29a251d7a069e64ccc665@chromium.org>
Commit-Queue: Shelley Chen <ab7b8cc85923339aed379eb1c5cc4dccfd2eb3d7@chromium.org>
Tested-by: Shelley Chen <ab7b8cc85923339aed379eb1c5cc4dccfd2eb3d7@chromium.org>

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