meta-evb-ast2600: Add obmc-phosphor-bsp-common.inc

Add obmc-phosphor-bsp-common.inc for building OpenBMC image.

Tested build with:
	TEMPLATECONF=meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf . openbmc-env
	bitbake obmc-phosphor-image

(From meta-evb rev: ddba410ebffe7bace588ff6d216c43608f4c5310)

Signed-off-by: Troy Lee <troy_lee@aspeedtech.com>
Change-Id: Ia005eb875f11fec8ffb3aadd5fff4b93a3028f3a
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/local.conf.sample b/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/local.conf.sample
index ab109b0..4ede461 100644
--- a/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/local.conf.sample
+++ b/meta-evb/meta-evb-aspeed/meta-evb-ast2600/conf/local.conf.sample
@@ -19,3 +19,5 @@
 EXTRA_USERS_PARAMS = " \
   usermod -p '\$1\$UGMqyqdG\$FZiylVFmRRfl9Z0Ue8G7e/' root; \
   "
+
+require conf/machine/include/obmc-bsp-common.inc