Rename cpu/x86/car.h to arch/early_variables.h

and add an ARMv7 version.

Change-Id: I14fbff88d7c2b003dde57a19bf0ba9640d322156
Signed-off-by: Stefan Reinauer <reinauer@google.com>
[km: rebased fa004acf8 from chromium git]
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/3939
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)
diff --git a/src/drivers/oxford/oxpcie/oxpcie_early.c b/src/drivers/oxford/oxpcie/oxpcie_early.c
index 2bca5c7..d04e9d4 100644
--- a/src/drivers/oxford/oxpcie/oxpcie_early.c
+++ b/src/drivers/oxford/oxpcie/oxpcie_early.c
@@ -19,7 +19,7 @@
 
 #include <stdint.h>
 #include <arch/io.h>
-#include <cpu/x86/car.h>
+#include <arch/early_variables.h>
 #include <delay.h>
 #include <uart8250.h>
 #include <device/pci_def.h>