Implement & link m_random_field.c

config/rel_slices.yml

@@ -71,6 +71,10 @@ m_police_box.c:
     .text: [0x803DE8A0, 0x803DEE38]
     .rodata: [0x806431C8, 0x806431D8]
     .data: [0x8065BE98, 0x8065BEF0]
+m_random_field.c:
+    .text: [0x803E4B20, 0x803E50E4]
+    .rodata: [0x80643218, 0x80643240]
+    .data: [0x8065C098, 0x8065C588]
 m_room_type/mRmTp_FtrItemNo2FtrIdx.c:
     .text: [0x803E7878, 0x803E78BC]
 #m_time.c: # unlinked until function callers that reorder local static variables are implemented.