Blackfin: use on-chip reset func with newer parts

Turns out the documentation is wrong and doing "RAISE 1" does not result
in a software reset, only a core reset.  So when the on-chip rom has a
functioning reset helper, use it.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>

arch/blackfin/kernel/reboot.c

@@ -23,6 +23,9 @@
 __attribute__ ((__l1_text__, __noreturn__))
 static void bfin_reset(void)
 {
+	if (!ANOMALY_05000353 && !ANOMALY_05000386)
+		bfrom_SoftReset((void *)(L1_SCRATCH_START + L1_SCRATCH_LENGTH - 20));
+
 	/* Wait for completion of "system" events such as cache line
 	 * line fills so that we avoid infinite stalls later on as
 	 * much as possible.  This code is in L1, so it won't trigger
@@ -30,11 +33,6 @@ static void bfin_reset(void)
 	 */
 	__builtin_bfin_ssync();
 
-	/* The bootrom checks to see how it was reset and will
-	 * automatically perform a software reset for us when
-	 * it starts executing after the core reset.
-	 */
-	if (ANOMALY_05000353 || ANOMALY_05000386) {
 	/* Initiate System software reset. */
 	bfin_write_SWRST(0x7);
 
@@ -69,7 +67,6 @@ static void bfin_reset(void)
 		: "a" (15 * 1)
 		: "LC1", "LB1", "LT1"
 	);
-	}
 
 	while (1)
 		/* Issue core reset */