[rdkb][common][bsp][fix griffin boot up fail with new bootloader]

[Description]
fix griffin boot up fail with new bootloader

[Release-log]

Change-Id: I038146c965f221a57beea357b48482ea6c320213
diff --git a/conf/machine/filogic.conf b/conf/machine/filogic.conf
index 22711e7..5c2f432 100644
--- a/conf/machine/filogic.conf
+++ b/conf/machine/filogic.conf
@@ -65,6 +65,8 @@
 UBOOT_ARCH = "arm64"
 UBOOT_LOADADDRESS = "0x48080000"
 UBOOT_ENTRYPOINT = "0x48080000"
+UBOOT_LOADADDRESS_mt7987 = "0x40080000"
+UBOOT_ENTRYPOINT_mt7987 = "0x40080000"
 MACHINE_EXTRA_RRECOMMENDS += "kernel-modules"
 
 TCLIBC = "glibc"