dt-bindings: clock: r8a7795: Remove CSIREF clock

The R-Car Gen3 HardWare Manual Errata for Rev. 0.52 (Nov 30, 2016)
removed the CSI reference clock on R-Car H3.

As this definition was never used, it can just be removed.
The freed slot in the DT bindings header must not be reused, though.

Fixes: 9d0c3c682033d3f1 ("clk: shmobile: Add r8a7795 CPG Core Clock Definitions")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@kernel.org>

dt-bindings: clock: renesas: Convert to SPDX identifiers

This patch updates license to use SPDX-License-Identifier
instead of verbose license text on Renesas related headers.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

clk: renesas: Add r8a7795 ES2.0 CPG Core Clock Definitions

Add all R-Car H3 ES2.0 Clock Pulse Generator Core Clock Outputs, as
listed in Table 8.2a ("List of Clocks [R-Car H3]") of the R-Car Gen3
Hardware User's Manual rev. 0.53E.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

clk: shmobile: Add r8a7795 CPG Core Clock Definitions

Add all R-Car H3 Clock Pulse Generator Core Clock Outputs, as listed in
Table 8.2a ("List of Clocks [R-Car H3]") of the R-Car Gen3 datasheet
(rev. 0.5E).

Note that internal CPG clocks (S0, S1, S2, S3, SDSRC, SSPSRC, and
RPCSRC) are not included, as they're used as internal clock sources
only.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Michael Turquette <mturquette@baylibre.com>
Reviewed-by: Magnus Damm <damm+renesas@opensource.se>