clk: shmobile: rcar-gen2: Document mandatory compatible fallback

The generic R-Car Gen2 CPG compatible value is mandatory, as the driver
uses only this value for matching.  Document that this is a fallback
that must be present.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Geert Uytterhoeven 2015-05-28 11:31:17 +02:00
commit dd734a7e77