task_allocator: Use config switches instead of magic defines

Replace __HAVE_ARCH_TASK_ALLOCATOR and __HAVE_ARCH_THREAD_ALLOCATOR
with proper config switches.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/20120505150142.371309416@linutronix.de
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index e417f35..ec0347a 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -36,6 +36,7 @@
 	def_bool !64BIT
 	select GENERIC_ATOMIC64
 	select CLZ_TAB
+	select ARCH_THREAD_INFO_ALLOCATOR
 
 config SPARC64
 	def_bool 64BIT
diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h
index c2a1080..b29498d 100644
--- a/arch/sparc/include/asm/thread_info_32.h
+++ b/arch/sparc/include/asm/thread_info_32.h
@@ -80,8 +80,6 @@
  */
 #define THREAD_INFO_ORDER  1
 
-#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
-
 BTFIXUPDEF_CALL(struct thread_info *, alloc_thread_info_node, int)
 #define alloc_thread_info_node(tsk, node) BTFIXUP_CALL(alloc_thread_info_node)(node)