Add CONFIG_WARNINGS_ARE_ERRORS and set it for qemu.

Remove all remaining warnings from qemu.

Signed-off-by: Myles Watson <mylesgw@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4939 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
diff --git a/src/Kconfig b/src/Kconfig
index cc61ba6..c2a56e1 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -463,3 +463,7 @@
 config ENABLE_APIC_EXT_ID
 	bool
 	default n
+
+config WARNINGS_ARE_ERRORS
+	bool
+	default n