Add human68k OS to list of supported OSes for m68k GNU assembler

compiler/m68k/ag68kgas.pas

@@ -364,7 +364,7 @@ interface
             idtxt  : 'AS';
             asmbin : 'as';
             asmcmd : '$ARCH -o $OBJ $EXTRAOPT $ASM';
-            supported_targets : [system_m68k_macosclassic,system_m68k_linux,system_m68k_PalmOS,system_m68k_netbsd,system_m68k_embedded];
+            supported_targets : [system_m68k_macosclassic,system_m68k_linux,system_m68k_PalmOS,system_m68k_netbsd,system_m68k_human68k,system_m68k_embedded];
             flags : [af_needar,af_smartlink_sections];
             labelprefix : '.L';
             labelmaxlen : -1;