[PATCH] xtensa: select generic atomic64_t support

[Fengguang Wu]

This will fix build errors:

block/blk-cgroup.c:609:2: error: unknown type name 'atomic64_t'
block/blk-cgroup.c:609:2: error: implicit declaration of function 'ATOMIC64_INIT' [-Werror=implicit-function-declaration]

Signed-off-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
---
 arch/xtensa/Kconfig |    1 +
 1 file changed, 1 insertion(+)

--- linux.orig/arch/xtensa/Kconfig	2012-07-28 09:50:02.000000000 +0800
+++ linux/arch/xtensa/Kconfig	2012-07-28 09:54:16.454865449 +0800
@@ -11,6 +11,7 @@ config XTENSA
 	select GENERIC_IRQ_SHOW
 	select GENERIC_CPU_DEVICES
 	select MODULES_USE_ELF_RELA
+	select GENERIC_ATOMIC64
 	help
 	  Xtensa processors are 32-bit RISC machines designed by Tensilica
 	  primarily for embedded systems.  These processors are both
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