kern: implement SvcSleepSystem

mesosphere/kernel/kernel.ld

@@ -51,7 +51,6 @@ SECTIONS
 		. = ALIGN(8);
 	} :code
 
-
 	/* .vectors. */
 	. = ALIGN(2K);
 	__vectors_start__ = . ;
@@ -61,6 +60,15 @@ SECTIONS
 		. = ALIGN(8);
 	} :code
 
+	/* .sleep. */
+	. = ALIGN(4K);
+	__sleep_start__ = . ;
+  .sleep :
+	{
+		KEEP( *(.sleep .sleep.*) )
+		. = ALIGN(8);
+	} :code
+
 	/* =========== RODATA section =========== */
 	. = ALIGN(0x1000);
 	__rodata_start = . ;