mc1322x: remove auto reception mode as it appears to be the cause of

the periodic autoack checksum errors. removing auto mode doesn't seem
to create any performance issue.

cpu/mc1322x/lib/maca.c

@@ -368,7 +368,9 @@ void post_receive(void) {
 			  ( 4 << PRECOUNT) |
 			  ( fcs_mode << NOFC ) |
 			  ( prm_mode << PRM) |
+#if 0 //dak says removing ctrl auto fixes the autoack checksum error --- doesn't cause a performance issue either
 			  (1 << maca_ctrl_auto) |
+#endif
 			  (maca_ctrl_seq_rx));
 	/* status bit 10 is set immediately */
         /* then 11, 10, and 9 get set */