Fixed build problem by modifying CONSOLES variable

Modified SERIAL_CONSOLES variable in the hardware
systems so that we can get rid of the hacks file.
The hacks file was used to manually stop the issue
but now that is taken out and the issue is handled
in the include files so the process doesn't start
in the first place.  This fixes issue number 586.

Resolves openbmc/openbmc#586

Change-Id: I1eb54dae6cbec661f4b8865875e0fe5bd734c70c
Signed-off-by: Josh King <jdking@us.ibm.com>
diff --git a/meta-openbmc-bsp/meta-aspeed/meta-ast2500/conf/machine/include/ast2500.inc b/meta-openbmc-bsp/meta-aspeed/meta-ast2500/conf/machine/include/ast2500.inc
index 6d2feb6..c8fc6da 100644
--- a/meta-openbmc-bsp/meta-aspeed/meta-ast2500/conf/machine/include/ast2500.inc
+++ b/meta-openbmc-bsp/meta-aspeed/meta-ast2500/conf/machine/include/ast2500.inc
@@ -14,4 +14,7 @@
 MACHINE_EXTRA_RDEPENDS += "udev-aspeed-vuart"
 
 DEFAULTTUNE = "armv6-novfp"
+
+SERIAL_CONSOLES = "115200;ttyS4"
+
 require conf/machine/include/arm/arch-armv6.inc