soc: bcm: brcmstb: biuctrl: Tune interface for 7255 and 7216

7255 and 7216 are some of the latest chips that were produced and
support the full register range configuration for the BIU, add the two
entries to get the expected programming.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

drivers/soc/bcm/brcmstb/biuctrl.c

@@ -102,6 +102,8 @@ static int __init mcp_write_pairing_set(void)
 }
 
 static const u32 b53_mach_compat[] = {
+	0x7216,
+	0x7255,
 	0x7260,
 	0x7268,
 	0x7271,