powerpc/85xx: implement hardware timebase sync

Do hardware timebase sync. Firstly, stop all timebases, and transfer the
timebase value of the boot core to the other core. Finally, start all
timebases.

Only apply to dual-core chips, such as MPC8572, P2020, etc.

Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/include/asm/fsl_guts.h b/arch/powerpc/include/asm/fsl_guts.h
index aa4c488..dd5ba2c 100644
--- a/arch/powerpc/include/asm/fsl_guts.h
+++ b/arch/powerpc/include/asm/fsl_guts.h
@@ -48,6 +48,8 @@
         __be32  dmuxcr;		/* 0x.0068 - DMA Mux Control Register */
         u8	res06c[0x70 - 0x6c];
 	__be32	devdisr;	/* 0x.0070 - Device Disable Control */
+#define CCSR_GUTS_DEVDISR_TB1	0x00001000
+#define CCSR_GUTS_DEVDISR_TB0	0x00004000
 	__be32	devdisr2;	/* 0x.0074 - Device Disable Control 2 */
 	u8	res078[0x7c - 0x78];
 	__be32  pmjcr;		/* 0x.007c - 4 Power Management Jog Control Register */