amdgpu: update dmcub 0.0.246.0 firmware

From internal commit 4e47be4578b8b55de72714d88ca393f5d2fd6ed0

Highlights:

• Add DCN401 firmware
• Update DCN35 & DCN351
  • Fixes for certain panel flickering during resume from S0i3
  • Fix an 8K monitor lightup issue on DP2
• Update DCN314
  • Fix a PSR entry issue during DPMS resume.

Signed-off-by: Aurabindo Pillai aurabindo.pillai@amd.com