Update buidlroot to version 2016.08.1

bsp/buildroot/package/sdl2_image/Config.in

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+config BR2_PACKAGE_SDL2_IMAGE
+	bool "sdl2_image"
+	depends on BR2_PACKAGE_SDL2
+	help
+	  SDL2_image is an image file loading library. It loads images
+	  as SDL surfaces, and supports the following formats: BMP,
+	  GIF, JPEG, LBM, PCX, PNG, PNM, TGA, TIFF, XCF, XPM, XV.
+
+	  http://www.libsdl.org/projects/SDL_image/

bsp/buildroot/package/sdl2_image/sdl2_image.hash

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+# Locally calculated
+sha256 3a3eafbceea5125c04be585373bfd8b3a18f259bd7eae3efc4e6d8e60e0d7f64  SDL2_image-2.0.1.tar.gz

bsp/buildroot/package/sdl2_image/sdl2_image.mk

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+################################################################################
+#
+# sdl2_image
+#
+################################################################################
+
+SDL2_IMAGE_VERSION = 2.0.1
+SDL2_IMAGE_SOURCE = SDL2_image-$(SDL2_IMAGE_VERSION).tar.gz
+SDL2_IMAGE_SITE = http://www.libsdl.org/projects/SDL_image/release
+SDL2_IMAGE_INSTALL_STAGING = YES
+SDL2_IMAGE_LICENSE = zlib
+SDL2_IMAGE_LICENSE_FILES = COPYING.txt
+
+# Unconditionally enable support for image formats that don't require
+# any dependency.
+SDL2_IMAGE_CONF_OPTS = \
+	--disable-sdltest \
+	--enable-bmp \
+	--enable-gif \
+	--enable-lbm \
+	--enable-pcx \
+	--enable-pnm \
+	--enable-tga \
+	--enable-xcf \
+	--enable-xpm \
+	--enable-xv
+
+SDL2_IMAGE_DEPENDENCIES = sdl2 host-pkgconf
+
+ifeq ($(BR2_PACKAGE_JPEG),y)
+SDL2_IMAGE_CONF_OPTS += --enable-jpg
+SDL2_IMAGE_DEPENDENCIES += jpeg
+else
+SDL2_IMAGE_CONF_OPTS += --disable-jpg
+endif
+
+ifeq ($(BR2_PACKAGE_LIBPNG),y)
+SDL2_IMAGE_CONF_OPTS += --enable-png
+SDL2_IMAGE_DEPENDENCIES += libpng
+else
+SDL2_IMAGE_CONF_OPTS += --disable-png
+endif
+
+ifeq ($(BR2_PACKAGE_TIFF),y)
+SDL2_IMAGE_CONF_OPTS += --enable-tif
+SDL2_IMAGE_DEPENDENCIES += tiff
+else
+SDL2_IMAGE_CONF_OPTS += --disable-tif
+endif
+
+ifeq ($(BR2_PACKAGE_WEBP),y)
+SDL2_IMAGE_CONF_OPTS += --enable-webp
+SDL2_IMAGE_DEPENDENCIES += webp
+else
+SDL2_IMAGE_CONF_OPTS += --disable-webp
+endif
+
+$(eval $(autotools-package))