Move top level pc80 directory to drivers/

There is no reason for this to be a top level directory.
Some stuff from lib/ should also be moved to drivers/

Change-Id: I3c2d2e127f7215eadead029cfc7442c22b26814a
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/939
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/drivers/Makefile.inc b/src/drivers/Makefile.inc
index 21a698a..5f6dadf 100644
--- a/src/drivers/Makefile.inc
+++ b/src/drivers/Makefile.inc
@@ -26,3 +26,4 @@
 subdirs-y += sil
 subdirs-y += trident
 subdirs-y += ics
+subdirs-$(CONFIG_ARCH_X86) += pc80