Documentation: devices.txt: Fix minors for ttyCPM*

ttyCPM* devices belong to CPM_UART driver at the first place
and that driver provides 6 ports.

Fixes: e29c3f8 ("Documentation: devices.txt: reconcile serial/ucc_uart minor numers")
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/27d7124cf86157e2a27c2b039e769041994d3f22.1691992627.git.christophe.leroy@csgroup.eu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: chleroy

Documentation/admin-guide/devices.txt

@@ -2691,7 +2691,7 @@
 		 45 = /dev/ttyMM1		Marvell MPSC - port 1 (obsolete unused)
 		 46 = /dev/ttyCPM0		PPC CPM (SCC or SMC) - port 0
 		    ...
-		 49 = /dev/ttyCPM5		PPC CPM (SCC or SMC) - port 3
+		 51 = /dev/ttyCPM5		PPC CPM (SCC or SMC) - port 5
 		 82 = /dev/ttyVR0		NEC VR4100 series SIU
 		 83 = /dev/ttyVR1		NEC VR4100 series DSIU
 		 148 = /dev/ttyPSC0		PPC PSC - port 0
@@ -2752,7 +2752,7 @@
 		 43 = /dev/ttycusmx2		Callout device for ttySMX2
 		 46 = /dev/cucpm0		Callout device for ttyCPM0
 		    ...
-		 49 = /dev/cucpm5		Callout device for ttyCPM5
+		 51 = /dev/cucpm5		Callout device for ttyCPM5
 		 82 = /dev/cuvr0		Callout device for ttyVR0
 		 83 = /dev/cuvr1		Callout device for ttyVR1