broadcom/vc5: Port the RCL setup to V3D4.1.

broadcom/vc5: Port the RCL setup to V3D4.1.

The TLB load/store path is rebuilt in this version.  There is no longer a
single-byte resolved store or the 3-byte extended store.  Instead, you get
to always use general loads/stores (which, honestly, was tempting even in
previous versions).