nvmem: rockchip-otp: Generalize rockchip_otp_wait_status()

In preparation to support additional Rockchip OTP memory devices with
different register layout, generalize rockchip_otp_wait_status() to
accept a new parameter for specifying the offset of the status register.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Tested-by: Vincent Legoll <vincent.legoll@gmail.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Message-ID: <20230611140330.154222-11-srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>