clk: renesas: cpg-mssr: Use struct_size() helper

struct_size() is what is normally used when a flexible array member is
present to avoid accidental mistakes.  pm_size is still needed for the
memcpy() call below.

Added __counted_by for extra runtime analysis.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260324021103.13651-1-rosenp@gmail.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Rosen Penev 2026-03-23 19:11:03 -07:00 • committed by Geert Uytterhoeven
commit 0e590f4d99