ARM: STi: DT: STiH41x Add clk_ignore_unused to bootargs

Interconnect clocks are not yet managed at the init, then
we have to start the kernel with clk_ignore_unused.
Signed-off-by: NGabriel Fernandez <gabriel.fernandez@linaro.org>
Signed-off-by: NMaxime Coquelin <maxime.coquelin@st.com>

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

@@ -15,7 +15,7 @@
 	};
 
 	chosen {
-		bootargs = "console=ttyAS0,115200";
+		bootargs = "console=ttyAS0,115200 clk_ignore_unused";
 		linux,stdout-path = &serial2;
 	};
 

arch/arm/boot/dts/stih41x-b2020.dtsi

@@ -14,7 +14,7 @@
 	};
 
 	chosen {
-		bootargs = "console=ttyAS0,115200";
+		bootargs = "console=ttyAS0,115200 clk_ignore_unused";
 		linux,stdout-path = &sbc_serial1;
 	};