[arch] Add __drivers and __devices arrays to ld scripts.

arch/arm/system-onesegment.ld

@@ -50,6 +50,10 @@ SECTIONS
 		__rodata_start = .;
 		*(.rodata .rodata.* .gnu.linkonce.r.*)
 		. = ALIGN(4);
+		__drivers = .;
+		KEEP(*(.drivers))
+		__drivers_end = .;
+		. = ALIGN(4);
 		__rodata_end = .;
 	}
 
@@ -68,6 +72,10 @@ SECTIONS
 		__apps_start = .;
 		KEEP (*(.apps))
 		__apps_end = .;
+		. = ALIGN(4);
+		__devices = .;
+		KEEP(*(.devices))
+		__devices_end = .;
 	}
 
 	.ctors : ALIGN(4) {