ARM: pxa: split mach/generic.h

Only one declaration from this header is actually used in drivers,
so move that one into the global location and leave everything else
private.
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-pxa/generic.h

@@ -7,6 +7,7 @@
  */
 
 #include <linux/reboot.h>
+#include <mach/generic.h>
 
 struct irq_data;
 
@@ -71,8 +72,3 @@ extern unsigned pxa25x_get_clk_frequency_khz(int);
 #define pxa27x_get_clk_frequency_khz(x)		(0)
 #endif
 
-#ifdef CONFIG_PXA3xx
-extern unsigned	pxa3xx_get_clk_frequency_khz(int);
-#else
-#define pxa3xx_get_clk_frequency_khz(x)		(0)
-#endif

arch/arm/mach-pxa/include/mach/generic.h

-#include "../../generic.h"
+#ifdef CONFIG_PXA3xx
+extern unsigned	pxa3xx_get_clk_frequency_khz(int);
+#else
+#define pxa3xx_get_clk_frequency_khz(x)		(0)
+#endif