cros_ec: exynos: Match up device tree with kernel version

The U-Boot device trees are slightly different in a few places. Adjust them
to remove most of the differences. Note that U-Boot does not support the
concept of interrupts as distinct from GPIOs, so this difference remains.

For sandbox, use the same keyboard file as for ARM boards and drop the
host emulation bus which seems redundant.

Signed-off-by: Simon Glass <sjg@chromium.org>

drivers/input/cros_ec_keyb.c

@@ -198,7 +198,7 @@ static int cros_ec_keyb_decode_fdt(const void *blob, int node,
 		return -1;
 	}
 	config->ghost_filter = fdtdec_get_bool(blob, node,
-					       "google,ghost-filter");
+					       "google,needs-ghost-filter");
 	return 0;
 }