package/ffmpeg: fix typo "nios" -> "nios2"

Typo added recently by
https://git.buildroot.net/buildroot/commit/package/ffmpeg?id=bd2544d3d3903935fc4dc0ec9c930720441e545f

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/ffmpeg/Config.in

@@ -4,7 +4,7 @@ config BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS
 	# fenv.h lacks FE_INVALID, FE_OVERFLOW & FE_UNDERFLOW
 	depends on !(BR2_archs38 && BR2_TOOLCHAIN_USES_GLIBC)
 	# fenv.h lacks FE_INVALID, FE_OVERFLOW & FE_UNDERFLOW on nios2
-	depends on !BR2_nios
+	depends on !BR2_nios2
 	# No support for ARMv7-M in the ARM assembly logic
 	depends on !BR2_ARM_CPU_ARMV7M
 	# Microblaze build affected by gcc PR71124 (infinite loop)