aspeed: g6: use the correct arm core tune

Use the correct tune for the g6 arm core: vfpv4d16

(From meta-aspeed rev: 8f80491f1d58fbe94ef1d32aba45789aee549cec)

Change-Id: I06b7b982c9064edd7369e947cc9e41e2e39a50ed
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-aspeed/conf/machine/include/aspeed.inc b/meta-aspeed/conf/machine/include/aspeed.inc
index 4bed9e3..7eaa346 100644
--- a/meta-aspeed/conf/machine/include/aspeed.inc
+++ b/meta-aspeed/conf/machine/include/aspeed.inc
@@ -17,3 +17,5 @@
 MACHINEOVERRIDES =. "aspeed:"
 
 SERIAL_CONSOLES ?= "115200;ttyS4"
+
+DEFAULTTUNE_aspeed-g6 ?= "armv7a-vfpv4d16"