ARM: dts: qcom: apq8064 merge hw splinlock into corresponding syscon device

Follow up the expected way of describing the SFPB hwspinlock and merge
hwspinlock node into corresponding syscon node, fixing several dt-schema
warnings.

Fixes: 24a9baf ("ARM: dts: qcom: apq8064: Add hwmutex and SMEM nodes")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250318-fix-nexus-4-v2-7-bcedd1406790@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Author: lumag

arch/arm/boot/dts/qcom/qcom-apq8064.dtsi

@@ -213,12 +213,6 @@
 		};
 	};
 
-	sfpb_mutex: hwmutex {
-		compatible = "qcom,sfpb-mutex";
-		syscon = <&sfpb_wrapper_mutex 0x604 0x4>;
-		#hwlock-cells = <1>;
-	};
-
 	smem {
 		compatible = "qcom,smem";
 		memory-region = <&smem_region>;
@@ -305,9 +299,10 @@
 			pinctrl-0 = <&ps_hold_default_state>;
 		};
 
-		sfpb_wrapper_mutex: syscon@1200000 {
-			compatible = "syscon";
-			reg = <0x01200000 0x8000>;
+		sfpb_mutex: hwmutex@1200600 {
+			compatible = "qcom,sfpb-mutex";
+			reg = <0x01200600 0x100>;
+			#hwlock-cells = <1>;
 		};
 
 		intc: interrupt-controller@2000000 {