clk: renesas: rzg2l: Update error message

Update the error message in `rzg2l_mod_clock_endisable()` to provide
clearer debugging information. Instead of printing only the register
address, include both the `CLK_ON_R(reg)` offset and the corresponding
`clk` name (`%pC`). This enhances readability and aids in debugging
clock enable failures.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20250211105603.195905-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Author: prabhakarlad

drivers/clk/renesas/rzg2l-cpg.c

@@ -1239,8 +1239,8 @@ static int rzg2l_mod_clock_endisable(struct clk_hw *hw, bool enable)
 	error = readl_poll_timeout_atomic(priv->base + CLK_MON_R(reg), value,
 					  value & bitmask, 0, 10);
 	if (error)
-		dev_err(dev, "Failed to enable CLK_ON %p\n",
-			priv->base + CLK_ON_R(reg));
+		dev_err(dev, "Failed to enable CLK_ON 0x%x/%pC\n",
+			CLK_ON_R(reg), hw->clk);
 
 	return error;
 }