[SPARC32]: Correct init_thread_union section and alignment for gcc 3.3+

Recent tools are disregarding both the __asm__(".text") in init_task.c
and the alignment at the end of .text in head.S.  Use attributes
instead.

arch/sparc/kernel/head.S

@@ -746,9 +746,6 @@ go_to_highmem:
 		jmpl	%g1, %g0
 		 nop
 
-	/* This is to align init_thread_union properly, be careful. -DaveM */
-	.align	8192
-
 /* The code above should be at beginning and we have to take care about
  * short jumps, as branching to .text.init section from .text is usually
  * impossible */

arch/sparc/kernel/init_task.c

@@ -21,5 +21,7 @@ EXPORT_SYMBOL(init_task);
  * If this is not aligned on a 8k boundry, then you should change code
  * in etrap.S which assumes it.
  */
-__asm__(".section \".text\",#alloc\n");
-union thread_union init_thread_union = { INIT_THREAD_INFO(init_task) };
+union thread_union init_thread_union
+	__attribute__((section (".text")))
+	__attribute__((aligned (THREAD_SIZE)))
+	= { INIT_THREAD_INFO(init_task) };