drivers: Introduce device lookup variants by of_node

Introduce wrappers for {bus/driver/class}_find_device() to
locate devices by its of_node.

Cc: Maarten Lankhorst <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: [email protected]
Cc: David Airlie <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: [email protected]
Cc: Florian Fainelli <[email protected]>
Cc: Frank Rowand <[email protected]>
Cc: Heiko Stuebner <[email protected]>
Cc: Liam Girdwood <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: Mathieu Poirier <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Srinivas Kandagatla <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Alan Tull <[email protected]>
Cc: [email protected]
Cc: Peter Rosin <[email protected]>
Cc: Florian Fainelli <[email protected]>
Cc: Heiner Kallweit <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Andrew Lunn <[email protected]>
Cc: Liam Girdwood <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Thor Thayer <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Andrew Lunn <[email protected]>
Cc: Peter Rosin <[email protected]>
Signed-off-by: Suzuki K Poulose <[email protected]>
Acked-by: Lee Jones <[email protected]>
Acked-by: Wolfram Sang <[email protected]> # I2C part
Acked-by: Moritz Fischer <[email protected]> # For FPGA part
Acked-by: Mark Brown <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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