package/pistache: needs NPTL

pistache needs NPTL as it unconditionally uses pthread_setname_np since
https://github.com/pistacheio/pistache/commit/b283c32963a7cb0500cf69555d320a6e9e252850
resulting in the following uclibc build failure since commit
82e61bed8208857d5d13c384c89086c4dd4e1e79:

../src/common/reactor.cc: In lambda function:
../src/common/reactor.cc:512:25: error: 'pthread_setname_np' was not declared in this scope; did you mean 'pthread_setcanceltype'?
  512 |                         pthread_setname_np(pthread_self(),
      |                         ^~~~~~~~~~~~~~~~~~
      |                         pthread_setcanceltype

Fixes: 82e61bed8208857d5d13c384c89086c4dd4e1e79
 - http://autobuild.buildroot.org/results/b2b22e4f9684aca0246650673fd8c33019712ddf
 - http://autobuild.buildroot.org/results/1597bfe2a57cd3aef54d331447dd81cae020d434

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit b6db4e2a79da7aadcbe2beda3e00381afb9e3f28)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/pistache/Config.in

@@ -2,7 +2,7 @@ config BR2_PACKAGE_PISTACHE
 	bool "pistache"
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_7 # C++17, std::optional
 	depends on BR2_USE_WCHAR
-	depends on BR2_TOOLCHAIN_HAS_THREADS
+	depends on BR2_TOOLCHAIN_HAS_THREADS_NPTL
 	depends on BR2_INSTALL_LIBSTDCPP
 	select BR2_PACKAGE_RAPIDJSON
 	help
@@ -12,8 +12,8 @@ config BR2_PACKAGE_PISTACHE
 
 	  https://github.com/oktal/pistache
 
-comment "pistache needs a toolchain w/ C++, gcc >= 7, threads, wchar"
+comment "pistache needs a toolchain w/ C++, gcc >= 7, NPTL, wchar"
 	depends on !BR2_INSTALL_LIBSTDCPP || \
 		   !BR2_TOOLCHAIN_GCC_AT_LEAST_7 || \
-		   !BR2_TOOLCHAIN_HAS_THREADS || \
+		   !BR2_TOOLCHAIN_HAS_THREADS_NPTL || \
 		   !BR2_USE_WCHAR