x86: sysreset: Allow reset driver to be included in SPL/TPL
At present this driver is always included in SPL and TPL, if U-Boot proper
enables it. Update the Makefile to provide full control using the existing
Kconfig options.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: make the Kconfig help text a little bit clearer]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>