Blackfin: fix booting with older bootroms (no EVT1)

When dropping jump block support, the assumption was that all bootroms
supported entry point redirection via the EVT1 register.  Unfortunately,
this turned out to be incorrect for the oldest Blackfin parts (BF533-0.2
and older and BF561).  No one really noticed earlier because these parts
usually are booted by bypassing the bootrom entirely, and older BF533
parts are not supported at all (too many anomalies).

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/cpu/blackfin/initcode.c b/cpu/blackfin/initcode.c
index c0fe2c6..a039cbb 100644
--- a/cpu/blackfin/initcode.c
+++ b/cpu/blackfin/initcode.c
@@ -543,9 +543,11 @@
 
 	serial_putc('T');
 
+#ifdef CONFIG_BFIN_BOOTROM_USES_EVT1
 	/* tell the bootrom where our entry point is */
 	if (CONFIG_BFIN_BOOT_MODE != BFIN_BOOT_BYPASS)
 		bfin_write_EVT1(CONFIG_SYS_MONITOR_BASE);
+#endif
 
 	serial_putc('>');
 	serial_putc('\n');