I have noticed three LGA 2011 motherboards with TPM 2.0 header
- Angxun X79-VG5
- Angxun X79-VG6
- Jginyue X79M-G ARGB
Sadly their BIOSes are not available to download yet.
However there’s one LGA 1356 board (H61 chipset), also with TPM header
X79 v5.7
The BIOS is available on the Angxun BIOS download page (not the product page). I wonder if the BIOS transplant thing you did with MR9A BIOS would work.