ipq40xx: fix support for Asus RT-AC1300UHP in 4.19 (#4285)

RT-AC1300UHP has 256M memory and does not need to use ath10k-ct-smallbuffers.
Signed-off-by: NAmadeusGhost <42570690+AmadeusGhost@users.noreply.github.com>

target/linux/ipq40xx/files-4.19/arch/arm/boot/dts/qcom-ipq4018-rt-ac58u.dts

@@ -6,12 +6,12 @@
 #include <dt-bindings/soc/qcom,tcsr.h>
 
 / {
-	model = "ASUS RT-AC58U";
+	model = "ASUS RT-AC58U / RT-AC1300UHP";
 	compatible = "asus,rt-ac58u";
 
 	memory {
 		device_type = "memory";
-		reg = <0x80000000 0x8000000>;
+		reg = <0x80000000 0x10000000>;
 	};
 
 	aliases {

target/linux/ipq40xx/image/Makefile

@@ -75,7 +75,7 @@ TARGET_DEVICES += asus_map-ac2200
 define Device/asus_rt-ac58u
 	$(call Device/FitImageLzma)
 	DEVICE_VENDOR := ASUS
-	DEVICE_MODEL := RT-AC58U / RT-AC1300UHP
+	DEVICE_MODEL := RT-AC58U
 	DEVICE_DTS := qcom-ipq4018-rt-ac58u
 	BLOCKSIZE := 128k
 	PAGESIZE := 2048
@@ -96,6 +96,24 @@ define Device/asus_rt-ac58u
 endef
 TARGET_DEVICES += asus_rt-ac58u
 
+define Device/asus_rt-ac1300uhp
+	$(call Device/FitImageLzma)
+	DEVICE_VENDOR := ASUS
+	DEVICE_MODEL := RT-AC1300UHP
+	DEVICE_DTS := qcom-ipq4018-rt-ac58u
+	BLOCKSIZE := 128k
+	PAGESIZE := 2048
+	DTB_SIZE := 65536
+	IMAGE_SIZE := 20439364
+	FILESYSTEMS := squashfs
+	UIMAGE_NAME:=$(shell echo -e '\03\01\01\01RT-AC58U')
+	KERNEL_INITRAMFS := $$(KERNEL) | uImage none
+	KERNEL_INITRAMFS_SUFFIX := -factory.trx
+	IMAGES := sysupgrade.bin
+	DEVICE_PACKAGES := kmod-usb-ledtrig-usbport
+endef
+TARGET_DEVICES += asus_rt-ac1300uhp
+
 define Device/asus_rt-acrh17
 	$(call Device/FitImageLzma)
 	DEVICE_VENDOR := ASUS