Do not match TGA2 adapters. They are not compatible with TGA adapters,

nor are they 3D accelarators as the description would like us to
believe. Since the TGA2 adapter has a VGA mode (unlike the TGA adapter),
one can use the VGA driver instead.

This fixes GENERIC kernels on alpha with TGA2 adapters.

sys/dev/tga/tga_pci.c

@@ -93,8 +93,6 @@ DRIVER_MODULE(tga, pci, tga_driver, tga_devclass, 0, 0);
 static struct gfb_type tga_devs[] = {
 	{ DEC_VENDORID, DEC_DEVICEID_TGA,
 	"DEC TGA (21030) 2D Graphics Accelerator" },
-	{ DEC_VENDORID, DEC_DEVICEID_TGA2,
-	"DEC TGA2 (21130) 3D Graphics Accelerator" },
 	{ 0, 0, NULL }
 };