package/libbsd: make available for arc

ARC support was added in 0.10.0 by
https://gitlab.freedesktop.org/libbsd/libbsd/-/commit/4997efa59a607a2b4aa2519a50f9e51017b667d2
so drop the architecture dependency on !BR2_arc.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libbsd/Config.in

@@ -3,7 +3,6 @@ config BR2_PACKAGE_LIBBSD_ARCH_SUPPORTS
 	default y
 	# libbsd does not support those architectures (see src/local-elf.h)
 	depends on !BR2_microblaze
-	depends on !BR2_arc
 	depends on !BR2_xtensa
 
 config BR2_PACKAGE_LIBBSD