[U-Boot] [PATCH 02/45] dm: core: Update some functions to use const

[sjg at google.com]

Quite a few functions do not actually modify the device that is passed in.
Update the function signatures to reflect that.

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

 drivers/core/device.c | 24 ++++++++++++------------
 include/dm/device.h   | 24 ++++++++++++------------
 2 files changed, 24 insertions(+), 24 deletions(-)

Applied to u-boot-dm