mpv: enable for ARC external toolchain

With the latest prebuilt ARC toolchain this package is building
without any errors.

Signed-off-by: Evgeniy Didin <didin@synopsys.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: arc-buildroot@synopsys.com
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/mpv/Config.in

@@ -4,8 +4,6 @@ config BR2_PACKAGE_MPV
 	depends on BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC || BR2_TOOLCHAIN_HAS_SYNC_8
-	# ARC toolchain issue
-	depends on !BR2_TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC
 	select BR2_PACKAGE_LIBICONV if !BR2_ENABLE_LOCALE
 	select BR2_PACKAGE_FFMPEG
 	select BR2_PACKAGE_FFMPEG_SWSCALE
@@ -29,4 +27,3 @@ comment "mpv needs a toolchain w/ threads, gcc >= 4.5"
 	depends on BR2_TOOLCHAIN_HAS_ATOMIC || BR2_TOOLCHAIN_HAS_SYNC_8
 	depends on !BR2_TOOLCHAIN_HAS_THREADS || \
 		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_5
-	depends on !BR2_TOOLCHAIN_EXTERNAL_SYNOPSYS_ARC