Move asm srcs to src

sym_bss.txt

@@ -51,7 +51,7 @@
 	.include "src/pokenav_unk_10.o"
     .include "src/ereader_helpers.o"
 	.include "src/faraway_island.o"
-	.include "asm/m4a_1.o"
+	.include "src/m4a_1.o"
 	.include "src/agb_flash.o"
 	.include "src/siirtc.o"
 	.include "*libgcc.a:dp-bit.o"