dscpPolicy.c - increase size of cache map

(and merge the ipv4 and ipv6 caches into one,
as there really is no need for separate ones)

Test: TreeHugger, atest DscpPolicyTest
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ie62393ea428885076ef59af69ac3eafeeba2934f
diff --git a/bpf_progs/dscpPolicy.h b/bpf_progs/dscpPolicy.h
index 1d8964a..8968668 100644
--- a/bpf_progs/dscpPolicy.h
+++ b/bpf_progs/dscpPolicy.h
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#define CACHE_MAP_SIZE 1024
 #define MAX_POLICIES 16
 
 #define SRC_IP_MASK_FLAG     1