Quite a few tests use addresses or hex values for comparisons. Add hex
output for test failures, e.g.:
0x55ca22fa == reg: Expected 0x55ca22fa (1439310586),
got 0x55ea22fb (1441407739)
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>