package/uclibc: enable Linuxthreads for riscv64

Since commit:
https://cgit.uclibc-ng.org/cgi/cgit/uclibc-ng.git/commit/?id=1640c262dc63e2f8f43c0728dbe867c8fffe3e9d

Linuxthreads support for riscv64 was added to uClibc-ng.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/uclibc/Config.in

@@ -85,7 +85,6 @@ config BR2_PTHREADS_NATIVE
 config BR2_PTHREADS
 	bool "linuxthreads"
 	depends on !BR2_aarch64 && !BR2_aarch64_be
-	depends on !BR2_RISCV_64
 	select BR2_TOOLCHAIN_HAS_THREADS
 
 config BR2_PTHREADS_NONE