cpu: Add DM_FLAG_PRE_RELOC flag to various cpu drivers

cpu: Add DM_FLAG_PRE_RELOC flag to various cpu drivers

It turns out commit c0434407b595 broke some boards which have DM CPU
driver with CONFIG_DISPLAY_CPUINFO option on. These boards just fail
to boot when print_cpuinfo() is called during boot.

Fixes: c0434407b595 ("board_f: Use static print_cpuinfo if CONFIG_CPU is active")
Reported-by: Stefan Roese <[email protected]>
Signed-off-by: Bin Meng <[email protected]>
Reviewed-by: Stefan Roese <[email protected]>
Tested-by: Stefan Roese <[email protected]>