ARM: dts: STiH41x-b2000: update gpio specifier

Remove useless gpio-cells
Add second parameter to indicate if gpio is active high
or low.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>

arch/arm/boot/dts/stih41x-b2000.dtsi

@@ -7,6 +7,8 @@
  * publishhed by the Free Software Foundation.
  */
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+
 / {
 
 	memory{
@@ -33,9 +35,8 @@ serial2: serial@fed32000 {
 		leds {
 			compatible	= "gpio-leds";
 			fp_led {
-				#gpio-cells = <1>;
 				label	= "Front Panel LED";
-				gpios	= <&pio105 7>;
+				gpios	= <&pio105 7 GPIO_ACTIVE_HIGH>;
 				linux,default-trigger	= "heartbeat";
 			};
 		};