vec_iree: Add BUILD_NO_WMMU flag

Add a BUILD_NO_WMMU flag (default: OFF).

Change-Id: Ib9415274c8a2d0fd6c59ade136d2606308413b7c
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7f6b663..4f80d86 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,6 +29,7 @@
 set(BUILD_WITH_SPRINGBOK ON CACHE BOOL "Build the target with springbok BSP (default: ON)")
 set(BUILD_ISP_WITH_RVV ON CACHE BOOL "Build the ISP pipeline with RVV (default: ON)")
 set(BUILD_MFCC_WITH_RVV OFF CACHE BOOL "Build audio preprocessing with RVV (default: OFF)")
+set(BUILD_NO_WMMU OFF CACHE BOOL "Build targets with no WMMU (default: OFF)")
 
 #-------------------------------------------------------------------------------
 # IREE-specific settings