ARM i.MX6q: export imx6q_revision

So it can be used in clk-imx6q.c for revision dependent clock tree setup.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>

arch/arm/mach-imx/common.h

@@ -74,6 +74,7 @@ extern void mxc_set_cpu_type(unsigned int type);
 extern void mxc_restart(char, const char *);
 extern void mxc_arch_reset_init(void __iomem *);
 extern int mx53_revision(void);
+extern int imx6q_revision(void);
 extern int mx53_display_revision(void);
 extern void imx_set_aips(void __iomem *);
 extern int mxc_device_init(void);

arch/arm/mach-imx/mach-imx6q.c

@@ -39,7 +39,7 @@
 #include "cpuidle.h"
 #include "hardware.h"
 
-static int imx6q_revision(void)
+int imx6q_revision(void)
 {
 	static u32 rev;