[llvm] [AMDGPU] Allow dpp in v_pk_fmac_f16 for GFX9 and GFX10 (PR #144782)

[Stanislav Mekhanoshin via llvm-commits]

================
@@ -2172,6 +2172,7 @@ defm V_LDEXP_F16       : VOP2_Real_gfx10<0x03b>;
 let IsSingle = 1 in {
   defm V_PK_FMAC_F16     : VOP2_Real_e32_gfx10<0x03c>;
 }
+defm V_PK_FMAC_F16     :  VOP2_Real_dpp_gfx10<0x03c>, VOP2_Real_dpp8_gfx10<0x03c>;
----------------
rampitec wrote:

Still do it in a single def. If there is no suitable macro, create one.

https://github.com/llvm/llvm-project/pull/144782