arm: dts: berlin2q: remove duplicated interrupt-parent

The default interrupt-parent has been set in the upper layer, apb@e80000
and apb@fc0000 for example. So if the interrupt-parent isn't changed, we
don't need to set it again. This patch removes the dumplicated
interrupt-parent settings.
Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

arch/arm/boot/dts/berlin2q.dtsi

@@ -309,7 +309,6 @@ i2c0: i2c@1400 {
 				#address-cells = <1>;
 				#size-cells = <0>;
 				reg = <0x1400 0x100>;
-				interrupt-parent = <&aic>;
 				interrupts = <4>;
 				clocks = <&chip_clk CLKID_CFG>;
 				pinctrl-0 = <&twsi0_pmux>;
@@ -322,7 +321,6 @@ i2c1: i2c@1800 {
 				#address-cells = <1>;
 				#size-cells = <0>;
 				reg = <0x1800 0x100>;
-				interrupt-parent = <&aic>;
 				interrupts = <5>;
 				clocks = <&chip_clk CLKID_CFG>;
 				pinctrl-0 = <&twsi1_pmux>;
@@ -528,7 +526,6 @@ i2c2: i2c@7000 {
 				#address-cells = <1>;
 				#size-cells = <0>;
 				reg = <0x7000 0x100>;
-				interrupt-parent = <&sic>;
 				interrupts = <6>;
 				clocks = <&refclk>;
 				pinctrl-0 = <&twsi2_pmux>;
@@ -541,7 +538,6 @@ i2c3: i2c@8000 {
 				#address-cells = <1>;
 				#size-cells = <0>;
 				reg = <0x8000 0x100>;
-				interrupt-parent = <&sic>;
 				interrupts = <7>;
 				clocks = <&refclk>;
 				pinctrl-0 = <&twsi3_pmux>;
@@ -552,7 +548,6 @@ i2c3: i2c@8000 {
 			uart0: uart@9000 {
 				compatible = "snps,dw-apb-uart";
 				reg = <0x9000 0x100>;
-				interrupt-parent = <&sic>;
 				interrupts = <8>;
 				clocks = <&refclk>;
 				reg-shift = <2>;
@@ -564,7 +559,6 @@ uart0: uart@9000 {
 			uart1: uart@a000 {
 				compatible = "snps,dw-apb-uart";
 				reg = <0xa000 0x100>;
-				interrupt-parent = <&sic>;
 				interrupts = <9>;
 				clocks = <&refclk>;
 				reg-shift = <2>;