Update warnings in depca.c ns8390.c

src/drivers/net/depca.c

@@ -1,4 +1,4 @@
-#warning "depca.c almost certainly won't work."
+#warning "depca.c: FIXME: fix relocation"
 
 #if 0
 /* Not fixed for relocation yet. Probably won't work relocated above 16MB */

src/drivers/net/ns8390.c

@@ -25,7 +25,7 @@ SMC8416 PIO support added by Andrew Bettison (andrewb@zip.com.au) on 4/3/02
 
 **************************************************************************/
 
-#warning "ns8390.c is a horrendous mess and needs to be tidied up"
+#warning "ns8390.c: FIXME: split ISA and PCI, clean up"
 #if 1