xtensa: merge .fixup with .text

Section .fixup contains pieces of code, merge it with the rest of the
.text section.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

arch/xtensa/kernel/vmlinux.lds.S

@@ -117,7 +117,7 @@ SECTIONS
     SCHED_TEXT
     CPUIDLE_TEXT
     LOCK_TEXT
-
+    *(.fixup)
   }
   _etext = .;
   PROVIDE (etext = .);
@@ -126,10 +126,6 @@ SECTIONS
 
   RODATA
 
-  /*  Relocation table */
-
-  .fixup   : { *(.fixup) }
-
   EXCEPTION_TABLE(16)
   NOTES
   /* Data section */