s390/boot: fix minor comment style damages

Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

arch/s390/boot/startup.c

@@ -448,8 +448,8 @@ void startup_kernel(void)
 	/*
 	 * The order of the following operations is important:
 	 *
-	 * - kaslr_adjust_relocs() must follow clear_bss_section() to establish static
-	 *   memory references to data in .bss to be used by setup_vmem()
+	 * - kaslr_adjust_relocs() must follow clear_bss_section() to establish
+	 *   static memory references to data in .bss to be used by setup_vmem()
 	 *   (i.e init_mm.pgd)
 	 *
 	 * - setup_vmem() must follow kaslr_adjust_relocs() to be able using