[MIPS] Make timer interrupt frequency configurable from kconfig.

Make HZ configurable.  DECSTATION can select 128/256/1024 HZ, JAZZ can
only select 100 HZ, others can select 100/128/250/256/1000/1024 HZ if
not explicitly specified).  Also remove all mach-xxx/param.h files and
update all defconfigs according to current HZ value.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/param.h b/include/asm-mips/param.h
index 2bead82..1d9bb8c 100644
--- a/include/asm-mips/param.h
+++ b/include/asm-mips/param.h
@@ -11,7 +11,7 @@
 
 #ifdef __KERNEL__
 
-# include <param.h>			/* Internal kernel timer frequency */
+# define HZ		CONFIG_HZ	/* Internal kernel timer frequency */
 # define USER_HZ	100		/* .. some user interfaces are in "ticks" */
 # define CLOCKS_PER_SEC	(USER_HZ)	/* like times() */
 #endif