ARM: tegra: fix build error when THUMB2_KERNEL enabled

This patch fix the build failure when CONFIG_THUBM2_KERNEL enabled. You
clould see the error message below:

arch/arm/mach-tegra/sleep-tegra30.S:69: Error: shift must be constant --
`orr r12,r12,r4,lsl r3'
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>

arch/arm/mach-tegra/sleep-tegra30.S

@@ -66,7 +66,9 @@ ENTRY(tegra30_cpu_shutdown)
 		FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG | \
 		FLOW_CTRL_CSR_ENABLE
 	mov	r4, #(1 << 4)
-	orr	r12, r12, r4, lsl r3
+ ARM(	orr	r12, r12, r4, lsl r3	)
+ THUMB(	lsl	r4, r4, r3		)
+ THUMB(	orr	r12, r12, r4		)
 	str	r12, [r1]
 
 	/* Halt this CPU. */