[AMDGPU] Src1 of VOP3 DPP instructions can be SGPR on supported subtargets (#67461)

In order to avoid duplicating every dpp pseudo opcode that has src1, we
allow it for all opcodes and add manual checks on subtargets that do not
support it.

GitOrigin-RevId: 2cd2445c21bc397628cd419817bbaf54224fd21e
12 files changed