Remove ALIGNBYTES and ALIGN from <sys/param.h>

There are only three users of bionic definition of ALIGN and keeping it
in sys/param.h polutes the namespace.

I inline the definition in the the three places that's used.

Bug: 13400663
Change-Id: I565008e8426c38ffb07422f42cd8e547d53044e9

libc/stdio/findfp.c

@@ -41,6 +41,9 @@
 #include "glue.h"
 #include "private/thread_private.h"
 
+#define ALIGNBYTES (sizeof(uintptr_t) - 1)
+#define ALIGN(p) (((uintptr_t)(p) + ALIGNBYTES) &~ ALIGNBYTES)
+
 int	__sdidinit;
 
 #define	NDYNAMIC 10		/* add ten more whenever necessary */