assembler: Import brw_eu_compact.c

To be able to import brw_eu.c and brw_eu_emit.c later on. This could be
used to get the assembler generate compact instructions at some point.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>

assembler/brw_compat.h

@@ -57,6 +57,8 @@ extern "C" {
 #define PRINTFLIKE(f, a)
 #endif
 
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
+
 #ifdef __cplusplus
 } /* end of extern "C" */
 #endif