clk: shmobile: rz: Document mandatory compatible fallback

The generic RZ 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 11:33:33 +02:00
commit a431c1fa01