nvmem: imx: support i.MX93 OCOTP

Add i.MX93 OCOTP support. i.MX93 OCOTP has two parts: Fuse shadow
block(fsb) and fuse managed by ELE. The FSB part could be directly
accessed with MMIO, the ELE could only be accessed with ELE API.

Currently the ELE API is not ready, so NULL function callback is used,
but it was tested with downstream ELE API.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Message-ID: <20230611140330.154222-22-srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>