clk: renesas: rzg2l: Remove unneeded semicolon

Eliminate the following coccicheck warning:
./drivers/clk/renesas/renesas-rzg2l-cpg.c:299:2-3: Unneeded semicolon

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/1623749970-38020-1-git-send-email-yang.lee@linux.alibaba.com


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