lantiq: Allow PKG_ASLR_PIE for DSL and voice drivers

When ASLR_PIE was activated globally these drivers failed to build
because the user space LDFLAGS leaked into the kernel build process.
This was fixed in upstream Linux kernel commit ce99d0bf312d ("kbuild:
clear LDFLAGS in the top Makefile") which went into Linux 4.17. The
lantiq target is now on Linux 4.19 only and these exceptions are not
needed any more.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

package/network/config/ltq-vdsl-app/Makefile

@@ -19,7 +19,6 @@ PKG_LICENSE:=BSD-2-Clause
 
 PKG_BUILD_DEPENDS:=ltq-vdsl
 
-PKG_ASLR_PIE:=0
 PKG_FLAGS:=nonshared
 
 include $(INCLUDE_DIR)/package.mk