pinctrl: qcom: lpass-lpi: use consistent name for "group" variable

The set_mux callback in SoC TLMM driver (pinctrl-msm.c) uses "group",
not "group_num" for the number of the pin group.  Other places of
lpass-lpi also use "group", so let's be consistent for code readability.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230309154949.658380-2-krzysztof.kozlowski@linaro.orgSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/qcom/pinctrl-lpass-lpi.c

@@ -84,10 +84,10 @@ static int lpi_gpio_get_function_groups(struct pinctrl_dev *pctldev,
 }
 
 static int lpi_gpio_set_mux(struct pinctrl_dev *pctldev, unsigned int function,
-			    unsigned int group_num)
+			    unsigned int group)
 {
 	struct lpi_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
-	const struct lpi_pingroup *g = &pctrl->data->groups[group_num];
+	const struct lpi_pingroup *g = &pctrl->data->groups[group];
 	u32 val;
 	int i, pin = g->pin;