There's only one user of rockchip_capsule_update_board_setup, which is
in board.c, and only one board defines it, so instead of having a header
only for one function symbol, let's just use a weak symbol instead.

Cc: Quentin Schulz <foss+uboot@0leil.net>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Reviewed-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>

The functions aren't used anywhere else than in board.c, therefore,
let's not expose them anymore at all.

This merges misc.c and board.c together and removes the functions from
the misc.h header file.

Cc: Quentin Schulz <foss+uboot@0leil.net>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>

Add information that will be needed for enabling the UEFI capsule
update feature on the RockPi4 boards. With the feature enabled, it
would be possible to update the idbloader and u-boot.itb images on the
RockPi4B and RockPi4C variants.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

Generate a MAC address based on the cpuid available in the efuse
block: Use the first 6 byte of the cpuid's SHA256 hash and set the
locally administered bits. Also ensure that the multicast bit is
cleared.

The MAC address is only generated and set if there is no ethaddr
present in the saved environment.

This is based off of Klaus Goger's work in 8adc9d

Signed-off-by: Rohan Garg <rohan.garg@collabora.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>