Fixed kernel>=6.1 support (generic raw uart, rtc-rx8130)

[jagiella]

• starting from kernel 6.1 the function fwnode_get_named_gpiod can not be used anymore by kernel modules. So one has to switch to gpiod_get_from_of_node.
• starting from kernel 6.1 the i2c_remove function signature changed from i2c_remove to i2c_remove leading to compiler errors (initializing the variable .remove of struct i2c_driver rx8130_driver with a function pointer of incompatible signature int (*)(struct i2c_client *)). Instead change function to static void rx8130_remove(struct i2c_client *client).

Solves #466

[stale[bot]]

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