vppinfra: add CLIB_CACHE_LINE_ROUND() macro
#define CLIB_CACHE_LINE_BYTES (1 << CLIB_LOG2_CACHE_LINE_BYTES)
#define CLIB_CACHE_LINE_ALIGN_MARK(mark) u8 mark[0] __attribute__((aligned(CLIB_CACHE_LINE_BYTES)))
+#define CLIB_CACHE_LINE_ROUND(x) ((x + CLIB_CACHE_LINE_BYTES - 1) & ~(CLIB_CACHE_LINE_BYTES - 1))
/* Default cache line fill buffers. */
#ifndef CLIB_N_PREFETCHES
