ath10k-firmware: update the qca988x firmware to 10.2.4.70.54

Use firmware version 10.2.4.70.54 from kvalo's git repository. The old
version (even though it's version number is greater) is an old version
from September 2015.
Using only the firmware versions from kvalo's git repo is recommended,
because those are tested by QCA's internal QCA.

The QCA988X directory received a small reorganization as a "hw2.0"
subdirectory was added - this patch also takes care of that as
board.bin was moved to that subdirectory.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

package/firmware/ath10k-firmware/Makefile

@@ -8,8 +8,8 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ath10k-firmware
-PKG_SOURCE_VERSION:=b00eb8d30fbebb6a5047ccacefa8c37e072fca9c
-PKG_VERSION:=2014-11-13-$(PKG_SOURCE_VERSION)
+PKG_SOURCE_VERSION:=307cb46b06661ebd3186723b5002de769c7add83
+PKG_VERSION:=2016-09-13-$(PKG_SOURCE_VERSION)
 PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
@@ -66,18 +66,10 @@ $(Package/ath10k-firmware-default)
   TITLE:=ath10k firmware for QCA988x devices
 endef
 
-QCA988X_FIRMWARE_FILE:=firmware-5.bin_10.2.4.97-1
 QCA988X_FIRMWARE_FILE_CT:=firmware-2-ct-full-community-16.1.bin-lede
 QCA99X0_FIRMWARE_FILE_CT:=firmware-5-ct-full-community-7.bin-lede.004
 QCA9984_FIRMWARE_FILE_CT:=firmware-5-ct-full-community-7.bin-lede.004
 
-define Download/ath10k-firmware-qca988x
-  URL:=https://www.codeaurora.org/cgit/quic/qsdk/oss/firmware/ath10k-firmware/plain/10.2.4/
-  FILE:=$(QCA988X_FIRMWARE_FILE)
-  MD5SUM:=fcb2fbd42d73a63fbf603505c718cbde
-endef
-$(eval $(call Download,ath10k-firmware-qca988x))
-
 define Download/ath10k-firmware-qca988x-ct
   URL:=https://www.candelatech.com/downloads/
   FILE:=$(QCA988X_FIRMWARE_FILE_CT)
@@ -188,17 +180,17 @@ endef
 define Package/ath10k-firmware-qca988x/install
 	$(INSTALL_DIR) $(1)/lib/firmware/ath10k/QCA988X/hw2.0
 	$(INSTALL_DATA) \
-		$(PKG_BUILD_DIR)/QCA988X/board.bin \
+		$(PKG_BUILD_DIR)/QCA988X/hw2.0/board.bin \
 		$(1)/lib/firmware/ath10k/QCA988X/hw2.0/
 	$(INSTALL_DATA) \
-		$(DL_DIR)/$(QCA988X_FIRMWARE_FILE) \
+		$(PKG_BUILD_DIR)/QCA988X/hw2.0/10.2.4.70/firmware-5.bin_10.2.4.70.54 \
 		$(1)/lib/firmware/ath10k/QCA988X/hw2.0/firmware-5.bin
 endef
 
 define Package/ath10k-firmware-qca988x-ct/install
 	$(INSTALL_DIR) $(1)/lib/firmware/ath10k/QCA988X/hw2.0
 	$(INSTALL_DATA) \
-		$(PKG_BUILD_DIR)/QCA988X/board.bin \
+		$(PKG_BUILD_DIR)/QCA988X/hw2.0/board.bin \
 		$(1)/lib/firmware/ath10k/QCA988X/hw2.0/
 	$(INSTALL_DATA) \
 		$(DL_DIR)/$(QCA988X_FIRMWARE_FILE_CT) \