aspeed: drop execute permissions from g5 defconfig

(From meta-aspeed rev: 89362f7e06b1b3766d359694ee9a907ae769d35d)

Change-Id: Ia83eea11281f387451c3ee17ba62ae15b068dd52
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-aspeed/recipes-kernel/linux/linux-aspeed/aspeed-g5/defconfig b/meta-aspeed/recipes-kernel/linux/linux-aspeed/aspeed-g5/defconfig
old mode 100755
new mode 100644