[PATCH 10/13] board: venice: add FSA support

[Peng Fan]

On Fri, May 23, 2025 at 10:20:15AM -0700, Tim Harvey wrote:
>The Gateworks Flexible Socket Adapters adapt common
>busses such as SDIO/UART/USB/PCI to various connectors
>such as M.2 B-Key, M.2 E-Key, M.2 M-Key, and MiniPCIe.
>
>Each FSA has an EEPROM onboard describing its details as well as an
>optional port-expander for configurable GPIO's.
>
>Add support for identifying the FSA's and configuring their
>details such as user description and GPIO's:
> - enable pca953x, pca954x and eeprom support for communicating
>   with the I2C eeprom and gpio port expander on the FSA
> - add FSA detection support
> - add FSA gpio configuration support
>
>Each FSA is identified in the device-tree by an alias to it's I2C
>bus where an eeprom at 54 node must exist as well as an gpio at 20 node
>for an io-expander. These nodes must be enabled so that
>they can be probed to determine if they are actually present in
>the system. If not present or not enabled the gpio expander can
>not be used. This also requires livetree as the gpio expander
>node if not present must be disabled.
>
>Signed-off-by: Tim Harvey <tharvey at gateworks.com>

Reviewed-by: Peng Fan <peng.fan at nxp.com>