UPSTREAM: nvmem: rockchip-efuse: add rk3399-efuse support

UPSTREAM: nvmem: rockchip-efuse: add rk3399-efuse support

1) the efuse timing of rk3399 is different from earlier SoCs.
2) rk3399-efuse is organized as 32bits by 32 one-time programmable
electrical fuses, the efuse of earlier SoCs is organized as 32bits
by 8 one-time programmable electrical fuses with random access interface.

This patch adds a new read function for rk3399-efuse.

Change-Id: I04c70a18f7f7e77eded6ffde132baac47b3aff73
Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 02baff325462cc7e81241b21959c5e62e7ca575e)