clk: renesas: r8a7795: Constify r8a7795_*_clks

Make r8a7795_core_clks and r8a7795_mod_clks arrays const and align them
with the other clock tables in other *cpg-mssr.c . No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230917095832.39007-1-marek.vasut+renesas@mailbox.org


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