clk: Introduce clk_hw_determine_rate_no_reparent()

Some clock drivers do not want to allow any reparenting on a given
clock, but usually do so by not providing any determine_rate
implementation.

Whenever we call clk_round_rate() or clk_set_rate(), this leads to
clk_core_can_round() returning false and thus the rest of the function
either forwarding the rate request to its current parent if
CLK_SET_RATE_PARENT is set, or just returning the current clock rate.

This behaviour happens implicitly, and as we move forward to making a
determine_rate implementation required for muxes, we need some way to
explicitly opt-in for that behaviour.

Fortunately, this is exactly what the clk_core_determine_rate_no_reparent()
function is doing, so we can simply make it available to drivers.

Cc: Abel Vesa <[email protected]>
Cc: Alessandro Zummo <[email protected]>
Cc: Alexandre Belloni <[email protected]>
Cc: Alexandre Torgue <[email protected]>
Cc: "Andreas Färber" <[email protected]>
Cc: AngeloGioacchino Del Regno <[email protected]>
Cc: Baolin Wang <[email protected]>
Cc: Charles Keepax <[email protected]>
Cc: Chen-Yu Tsai <[email protected]>
Cc: Chen-Yu Tsai <[email protected]>
Cc: Chunyan Zhang <[email protected]>
Cc: Claudiu Beznea <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: David Airlie <[email protected]>
Cc: David Lechner <[email protected]>
Cc: Dinh Nguyen <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Geert Uytterhoeven <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Jernej Skrabec <[email protected]>
Cc: Jonathan Hunter <[email protected]>
Cc: Kishon Vijay Abraham I <[email protected]>
Cc: Liam Girdwood <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Luca Ceresoli <[email protected]>
Cc: Manivannan Sadhasivam <[email protected]>
Cc: Mark Brown <[email protected]>
Cc: Markus Schneider-Pargmann <[email protected]>
Cc: Max Filippov <[email protected]>
Cc: Maxime Coquelin <[email protected]>
Cc: Mikko Perttunen <[email protected]>
Cc: Miles Chen <[email protected]>
Cc: Nicolas Ferre <[email protected]>
Cc: Orson Zhai <[email protected]>
Cc: Paul Cercueil <[email protected]>
Cc: Peng Fan <[email protected]>
Cc: Peter De Schrijver <[email protected]>
Cc: Prashant Gaikwad <[email protected]>
Cc: Richard Fitzgerald <[email protected]>
Cc: Samuel Holland <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: Sekhar Nori <[email protected]>
Cc: Shawn Guo <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Thierry Reding <[email protected]>
Cc: Ulf Hansson <[email protected]>
Cc: Vinod Koul <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: NXP Linux Team <[email protected]>
Cc: [email protected]
Cc: Pengutronix Kernel Team <[email protected]>
Signed-off-by: Stephen Boyd <[email protected]>
Signed-off-by: Maxime Ripard <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
| Reported-by: kernel test robot <[email protected]>:

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