brcm63xx: allow bcm963xx and livebox support at the same time

Use the CFE_EPTSEAL to tell them apart at runtime. Added for now only
for the 3.14 until properly tested.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 41296

target/linux/brcm63xx/patches-3.14/302-extended-platform-devices.patch

@@ -1,6 +1,6 @@
---- a/arch/mips/bcm63xx/boards/board_bcm963xx.c
-+++ b/arch/mips/bcm63xx/boards/board_bcm963xx.c
-@@ -964,6 +964,9 @@ int __init board_register_devices(void)
+--- a/arch/mips/bcm63xx/boards/board_common.c
++++ b/arch/mips/bcm63xx/boards/board_common.c
+@@ -222,6 +222,9 @@ int __init board_register_devices(void)
  
  	bcm63xx_hsspi_register();