mvebu: disable WRT1900AC v1 and WRT32X images for now

The kernel appears to have grown too large, breaking the build for the
entire target.

Disable the affected images for now until the situation is dealt with.

Signed-off-by: Jo-Philipp Wich <[email protected]>

target/linux/mvebu/image/cortexa9.mk

@@ -109,7 +109,7 @@ define Device/linksys_wrt1900ac-v1
   DEVICE_PACKAGES += mwlwifi-firmware-88w8864
   KERNEL_SIZE := 3072k
 endef
-TARGET_DEVICES += linksys_wrt1900ac-v1
+#TARGET_DEVICES += linksys_wrt1900ac-v1
 
 define Device/linksys_wrt1900ac-v2
   $(call Device/linksys)
@@ -142,7 +142,7 @@ define Device/linksys_wrt32x
   KERNEL_SIZE := 3072k
   KERNEL := kernel-bin | append-dtb
 endef
-TARGET_DEVICES += linksys_wrt32x
+#TARGET_DEVICES += linksys_wrt32x
 
 define Device/marvell_a370-db
   $(Device/NAND-512K)