Fix typo in Makefile;
fix problem with PARTNUM detection
diff --git a/cpu/mpc8xx/cpu.c b/cpu/mpc8xx/cpu.c
index 3504422..3fb97b0 100644
--- a/cpu/mpc8xx/cpu.c
+++ b/cpu/mpc8xx/cpu.c
@@ -513,7 +513,7 @@
*
* For older chips, it's just MF field of PLPRCR plus one.
*/
- if ((immr & 0xFFFF) >= MPC8xx_NEW_CLK) { /* MPC866/87x/88x series */
+ if ((immr & 0x0FFF) >= MPC8xx_NEW_CLK) { /* MPC866/87x/88x series */
factor = (PLPRCR_val(MFI) + PLPRCR_val(MFN)/(PLPRCR_val(MFD)+1))/
(PLPRCR_val(PDF)+1) / (1<<PLPRCR_val(S));
} else {