build: add Marvell CN913x platform

Change-Id: If16b073ddf204676c3ef410ba76d289e25e376d8
Type: feature
Signed-off-by: Damjan Marion <damarion@cisco.com>
diff --git a/src/cmake/platform/cn913x.cmake b/src/cmake/platform/cn913x.cmake
new file mode 100644
index 0000000..8c5cb73
--- /dev/null
+++ b/src/cmake/platform/cn913x.cmake
@@ -0,0 +1,3 @@
+
+set(VPP_PLATFORM_CACHE_LINE_SIZE 64)
+set(VPP_PLATFORM_MARCH_FLAGS -march=armv8-a+crc+crypto)