Fixed MESS and Arcade builds (#10680)

* Fixed MESS build

* Fixed Arcade build

src/mame/arcade.flt

@@ -1210,6 +1210,7 @@ sega/hshavoc.cpp
 sega/kopunch.cpp
 sega/lindbergh.cpp
 sega/megadriv_acbl.cpp
+sega/megadriv_sunmix.cpp
 sega/megaplay.cpp
 sega/megatech.cpp
 sega/model1.cpp

src/mame/mess.flt

@@ -195,6 +195,7 @@ ddr/pcm.cpp
 ddr/poly880.cpp
 ddr/sc2.cpp
 ddr/slc1.cpp
+ddr/sprachmg.cpp
 ddr/vcs80.cpp
 dec/dct11em.cpp
 dec/decmate2.cpp
@@ -1102,6 +1103,7 @@ trs/agvision.cpp
 trs/coco12.cpp
 trs/coco3.cpp
 trs/dgn_beta.cpp
+trs/dgnalpha.cpp
 trs/dragon.cpp
 trs/lnw80.cpp
 trs/max80.cpp