migrated code to pragma-like ROM layout definitions

c64/kernal/panic.s

@@ -1,4 +1,6 @@
-#if ROM_LAYOUT_STD || (ROM_LAYOUT_M65 && SEGMENT_KERNAL_0)
+// #LAYOUT# STD *        #TAKE
+// #LAYOUT# *   KERNAL_0 #TAKE
+// #LAYOUT# *   *        #IGNORE
 
 //
 // Something terrible happened - show the panic screen
@@ -73,6 +75,3 @@ kernal_panic_infinite_loop:
 	bne kernal_panic_infinite_loop // branch always
 
 #endif // CONFIG_PANIC_SCREEN
-
-
-#endif // ROM layout