add BTT_MMB_CAN_v1.1.cfg

[Bastlwastl84]

Klippain branch

• I confirm using the main branch

Version

v4.3.1-18-ga30308e5

Describe the bug and expected behavior

BTT_MMB_CAN_v1.0 and BTT_MMB_CAN_v1.1 having different pin-output
found the bug: at klippain mcu.cfg
there is inside
[include config/mcu_definitions/mmu/BTT_MMB_CAN_v1.0.cfg] # Do not remove this line
but V1.0 and V1.1 have different pinout
MCU_M1_EN=PA8>**PB8** MCU_STP4=PB8>**PA8**
if using my old config and installing happy hare, the gear box of the ERCF2 is working
if using klippain and installing happy hare, the gearbox is not working

Additional information and klippy.log

No response