ipq806x: ipq4019: add ap-dk01.1-c1 board support

AP-DK01.1-C1 is QCA dev board with:
- ipq4018 quad core ARM @716.8MHz, 2x2 dual (11n+11ac) radio
- 256MB RAM
- 32MB SPI flash
- QCA8075 multiport ethernet phy (WAN port, 4x LAN ports)

First installation via u-boot:
sf probe
sf erase 0x180000 0x1a00000
tftpboot 0x84000000 lede-ipq806x-AP-DK01.1-C1-squashfs-sysupgrade.bin
sf write 0x84000000 0x180000 $filesize

Further upgrades via sysupgrade.

Changes:
- add partitions
- set memory size to 256MB
- add reserved memory mapping
- add correct compatible string
- add image generation
- extract pre-cal data from ART partition

Compile and run tested.
Wirespeed NAT can be achieved with spreading rx interrupts over different
cores. Wifi speed is ~550Mbps @5GHz in open air.

Note:
AP-DK01.1-C1 is fully compatible with AP-DK01.2-C1, which has
ipq4028 instead of ipq4018 on board.

Changes since v2:
- based on dts(i) rework/cleanup submitted:
  http://lists.infradead.org/pipermail/lede-dev/2017-October/009596.html
- precise reserved memory mapping
- more precise description
- compatible string

Signed-off-by: Roman Yeryomin <roman@advem.lv>

target/linux/ipq806x/base-files/etc/hotplug.d/firmware/11-ath10k-caldata

@@ -47,6 +47,9 @@ board=$(board_name)
 case "$FIRMWARE" in
 "ath10k/pre-cal-ahb-a000000.wifi.bin")
 	case "$board" in
+	ap-dk01.1-c1)
+		ath10kcal_extract "ART" 4096 12064
+		;;
 	fritz4040)
 		/usr/bin/fritz_cal_extract -i 1 -s 0x400 -e 0x207 -l 12064 -o /lib/firmware/$FIRMWARE $(find_mtd_chardev "urlader_config")
 		;;
@@ -54,6 +57,9 @@ case "$FIRMWARE" in
 	;;
 "ath10k/pre-cal-ahb-a800000.wifi.bin")
 	case "$board" in
+	ap-dk01.1-c1)
+		ath10kcal_extract "ART" 20480 12064
+		;;
 	fritz4040)
 		/usr/bin/fritz_cal_extract -i 1 -s 0x400 -e 0x208 -l 12064 -o /lib/firmware/$FIRMWARE $(find_mtd_chardev "urlader_config")
 		;;