Stop including <linux/param.h> in <sys/param.h>.

Bug: 19092844
Change-Id: I1a4a0c84a196a187ea32e58491de744cf3c0f404
diff --git a/libc/include/sys/param.h b/libc/include/sys/param.h
index e64d6ce..03a462e 100644
--- a/libc/include/sys/param.h
+++ b/libc/include/sys/param.h
@@ -29,8 +29,8 @@
 #define _SYS_PARAM_H_
 
 #include <limits.h>
-#include <linux/param.h>
 
+#define HZ 100
 #define MAXPATHLEN  PATH_MAX
 #define MAXSYMLINKS 8