stm32mp1: board: remove board_check_usb_power when ADC is not activated

Avoid compilation issue when CONFIG_ADC is not activated

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

board/st/stm32mp1/stm32mp1.c

@@ -297,6 +297,7 @@ static void __maybe_unused led_error_blink(u32 nb_blink)
 		hang();
 }
 
+#ifdef CONFIG_ADC
 static int board_check_usb_power(void)
 {
 	struct ofnode_phandle_args adc_args;
@@ -430,6 +431,7 @@ static int board_check_usb_power(void)
 
 	return 0;
 }
+#endif /* CONFIG_ADC */
 
 static void sysconf_init(void)
 {
@@ -660,8 +662,10 @@ int board_late_init(void)
 	}
 #endif
 
+#ifdef CONFIG_ADC
 	/* for DK1/DK2 boards */
 	board_check_usb_power();
+#endif /* CONFIG_ADC */
 
 	/* Check the boot-source to disable bootdelay */
 	boot_device = env_get("boot_device");