Move WiFi firmwares to vendor

In order to make generic system image, those non-generic firmwares are
moved to vendor.

Bug: 36015569
Test: check that the firmewares at /vendor partition and wifi is working
correctly.

Change-Id: I6ec7fbb99fb369a397023f3651c458a1a76b8dd3
diff --git a/device-common.mk b/device-common.mk
index 0b8006a..cf004fc 100644
--- a/device-common.mk
+++ b/device-common.mk
@@ -182,8 +182,8 @@
 PRODUCT_COPY_FILES += \
     device/google/marlin/wpa_supplicant_overlay.conf:$(TARGET_COPY_OUT_VENDOR)/etc/wifi/wpa_supplicant_overlay.conf     \
     device/google/marlin/p2p_supplicant_overlay.conf:$(TARGET_COPY_OUT_VENDOR)/etc/wifi/p2p_supplicant_overlay.conf     \
-    device/google/marlin/WCNSS_cfg.dat:system/etc/firmware/wlan/qca_cld/WCNSS_cfg.dat \
-    device/google/marlin/WCNSS_qcom_cfg.ini:system/etc/firmware/wlan/qca_cld/WCNSS_qcom_cfg.ini
+    device/google/marlin/WCNSS_cfg.dat:$(TARGET_COPY_OUT_VENDOR)/firmware/wlan/qca_cld/WCNSS_cfg.dat \
+    device/google/marlin/WCNSS_qcom_cfg.ini:$(TARGET_COPY_OUT_VENDOR)/firmware/wlan/qca_cld/WCNSS_qcom_cfg.ini
 
 # MIDI feature
 PRODUCT_COPY_FILES += \