amdgpu: update vcn firmware for raven

VCN: 1.73
From internal git commit:
537030e582a79d08c3b838b8ba1d86e83f803ff4

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>
diff --git a/amdgpu/raven_vcn.bin b/amdgpu/raven_vcn.bin
index 911a697..6f9a7e1 100644
--- a/amdgpu/raven_vcn.bin
+++ b/amdgpu/raven_vcn.bin
Binary files differ