package/linux-firmware: different iwlwifi3160/7260 firmwares for different kernels

The firmwares to use for iwlwifi 3160/7260 are different, depending on which
version of the Linux kernel is being used:
  - rev. 7 is for linux 3.10 through 3.12 (both included)
  - rev. 8 is for linux 3.13 onward

Add a config choice to select the appropriate version.

(See cset a0a6eeb in the linux-firmware repository for the details.)

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/linux-firmware/Config.in

@@ -48,6 +48,34 @@ config BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_7260
 	  Firmware files for the Intel Wifi 7260 devices supported by
 	  the iwlwifi kernel driver.
 
+if BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_3160 || \
+   BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_7260
+
+choice
+	bool "iwlwifi 3160/7260 revision to use"
+	help
+	  Use revision 7 for kernel 3.10 to 3.12.
+	  Use revision 8 for kernel 3.13 onward.
+
+config BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_3160_7260_7
+	prompt "revision 7"
+	help
+	  Use revision 7 for kernel 3.10 to 3.12.
+
+config BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_3160_7260_8
+	prompt "revision 8"
+	help
+	  Use revision 8 for kernel 3.13 onward.
+
+endchoice
+
+config BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_3160_7260_REV
+	int
+	default 7 if BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_3160_7260_7
+	default 8 if BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_3160_7260_8
+
+endif # iwlwifi 3160/7260
+
 config BR2_PACKAGE_LINUX_FIRMWARE_LIBERTAS_SD8686_V8
 	bool "Libertas SD 8686 v8"
 	help

package/linux-firmware/linux-firmware.mk

@@ -127,7 +127,7 @@ LINUX_FIRMWARE_ALL_LICENSE_FILES += LICENCE.ti-connectivity
 endif
 
 ifeq ($(BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_3160),y)
-LINUX_FIRMWARE_FILES += iwlwifi-3160-7.ucode
+LINUX_FIRMWARE_FILES += iwlwifi-3160-$(BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_3160_7260_REV).ucode
 LINUX_FIRMWARE_ALL_LICENSE_FILES += LICENCE.iwlwifi_firmware
 endif
 
@@ -141,7 +141,7 @@ LINUX_FIRMWARE_ALL_LICENSE_FILES += LICENCE.iwlwifi_firmware
 endif
 
 ifeq ($(BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_7260),y)
-LINUX_FIRMWARE_FILES += iwlwifi-7260-7.ucode
+LINUX_FIRMWARE_FILES += iwlwifi-7260-$(BR2_PACKAGE_LINUX_FIRMWARE_IWLWIFI_3160_7260_REV).ucode
 LINUX_FIRMWARE_ALL_LICENSE_FILES += LICENCE.iwlwifi_firmware
 endif