ARC: switch to NPTL

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

extra/Configs/defconfigs/arc/arcv2_defconfig

@@ -7,7 +7,7 @@ KERNEL_HEADERS="%KERNEL_HEADERS%"
 # LDSO_CACHE_SUPPORT is not set
 LDSO_RUNPATH=y
 # LDSO_SAFE_RUNPATH is not set
-LINUXTHREADS_OLD=y
+UCLIBC_HAS_THREADS_NATIVE=y
 PTHREADS_DEBUG_SUPPORT=y
 UCLIBC_HAS_OBSTACK=y
 UCLIBC_SUSV2_LEGACY=y

extra/Configs/defconfigs/arc/defconfig

@@ -6,7 +6,7 @@ KERNEL_HEADERS="%KERNEL_HEADERS%"
 # LDSO_CACHE_SUPPORT is not set
 LDSO_RUNPATH=y
 # LDSO_SAFE_RUNPATH is not set
-LINUXTHREADS_OLD=y
+UCLIBC_HAS_THREADS_NATIVE=y
 PTHREADS_DEBUG_SUPPORT=y
 UCLIBC_HAS_OBSTACK=y
 UCLIBC_SUSV2_LEGACY=y