musl-fts: remove shared libraries from host

Avoids having to add rpath to the various packages using it. Also add
PIC to fix compilation as static libraries do not use PIC by default.

Fixes: 1fb0993 ("musl-fts: add host build")
Signed-off-by: Rosen Penev <rosenp@gmail.com>

package/libs/musl-fts/Makefile

@@ -44,6 +44,7 @@ define Package/musl-fts/description
   The musl-fts package implements the fts(3) functions fts_open, fts_read, fts_children, fts_set and fts_close, which are missing in musl libc.
 endef
 
+HOST_CONFIGURE_ARGS += --disable-shared --with-pic
 
 define Build/InstallDev
 	$(INSTALL_DIR) $(1)/usr/include