ADIv5: Abort Romtable scan also if CIDR0 is invalid after halting #832

STM32WLE5 has the same dual core chip as STM32WL5. For the second
core, the additional AP can be see, but access to e.g. CIDR0 for that
Romtable fails.
Aborting the scan too if again the second read of CIDR0 fails makes
sense anyways!

src/target/adiv5.c

@@ -416,6 +416,8 @@ static void adiv5_component_probe(ADIv5_AP_t *ap, uint32_t addr, int recursion,
 				return; /* Halting failed! */
 			/* CPU now halted, read cidr again. */
 			cidr = adiv5_ap_read_id(ap, addr + CIDR0_OFFSET);
+			if ((cidr & ~CID_CLASS_MASK) != CID_PREAMBLE)
+				return;
 		}
 	}
 #if defined(ENABLE_DEBUG)