qcacld-3.0: Enable size optimization compiler flag for genoa

Enable size optimization compiler flag for genoa

Change-Id: Ibda9f6baf07077b0fcc6ae4d7bd6c148252cc82b
CRs-Fixed: 2255923
diff --git a/Kbuild b/Kbuild
index d68799c..6c1febe 100644
--- a/Kbuild
+++ b/Kbuild
@@ -1903,6 +1903,8 @@
 cppflags-y += -DQCA_HOST2FW_RXBUF_RING
 #endof dummy flags
 
+ccflags-$(CONFIG_ENABLE_SIZE_OPTIMIZE) += -Os
+
 # DFS component
 cppflags-$(CONFIG_WLAN_DFS_MASTER_ENABLE) += -DQCA_MCL_DFS_SUPPORT
 ifeq ($(CONFIG_WLAN_FEATURE_DFS_OFFLOAD), y)