rtl8188eu: new package

[Thomas:
  - remove patches 0001 and 0002, they are not needed since when using
    the kernel-module infrastructure, we directly call the kernel
    build system and bypass the one provided by the external module
  - install the firmware directly in the Buildroot .mk file, which
    allows to also remove patch 0003.
  - remove RTL8188EU_DEPENDENCIES = linux, since this is already
    handled by the kernel-module infrastructure.]

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Config.in

@@ -405,6 +405,7 @@ endif
 	source "package/read-edid/Config.in"
 	source "package/rng-tools/Config.in"
 	source "package/rpi-userland/Config.in"
+	source "package/rtl8188eu/Config.in"
 	source "package/rtl8821au/Config.in"
 	source "package/sane-backends/Config.in"
 	source "package/sdparm/Config.in"

package/rtl8188eu/Config.in

@@ -0,0 +1,19 @@
+config BR2_PACKAGE_RTL8188EU
+	bool "rtl8188eu"
+	depends on BR2_LINUX_KERNEL
+	help
+	  A standalone driver for the RTL8188EU USB Wi-Fi adapter.
+	  This is needed only for Linux kernels before 3.12.
+	  Since 3.12, there is a (staging) driver in mainline, with a similar
+	  codebase.
+
+	  Make sure your target kernel has the CONFIG_WIRELESS_EXT config
+	  option enabled.
+
+	  Note: this package needs a firmware loading mechanism to load the
+	  binary blob for the chip to work.
+
+	  https://github.com/lwfinger/rtl8188eu
+
+comment "rtl8188eu needs a Linux kernel to be built"
+	depends on !BR2_LINUX_KERNEL

package/rtl8188eu/rtl8188eu.mk

@@ -0,0 +1,21 @@
+################################################################################
+#
+# rtl8188eu
+#
+################################################################################
+
+RTL8188EU_VERSION = 3091828c8f4b4a01cbec6025128bf77e6e7b9f97
+RTL8188EU_SITE = $(call github,lwfinger,rtl8188eu,$(RTL8188EU_VERSION))
+RTL8188EU_LICENSE = GPLv2, proprietary (rtl8188eufw.bin firmware blob)
+RTL8188EU_LICENSE_FILES = COPYING
+RTL8188EU_MODULE_MAKE_OPTS = CONFIG_RTL8188EU=m
+
+$(eval $(kernel-module))
+
+define RTL8188EU_INSTALL_FIRMWARE
+	$(INSTALL) -D -m 644 $(@D)/rtl8188eufw.bin \
+		$(TARGET_DIR)/lib/firmware/rtlwifi/rtl8188eufw.bin
+endef
+RTL8188EU_POST_INSTALL_TARGET_HOOKS += RTL8188EU_INSTALL_FIRMWARE
+
+$(eval $(generic-package))