openhcl/firmware_uefi: EfiDiagnostics fix HashInstanceLib mismatch errors

[maheeraeron]

EfiDiagnostics spams these logs with OpenHCL and Hyper-V:

[2.273074] firmware_uefi::service::diagnostics: WARN  EFI log entry debug_level=WARNING ticks=0x187fb03 phase=DXE log_message="WARNING: There is mismatch of supported HashMask (0x2 - 0x7) between modules"
[2.273309] firmware_uefi::service::diagnostics: WARN  EFI log entry debug_level=WARNING ticks=0x187fb15 phase=DXE log_message="that are linking different HashInstanceLib instances!"

This needs to be fixed from the UEFI side, but it is recommended to do this after suppressing these messages first.