Revert of [gn] Don't use PIE for host executables

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 67ec024242578befb351d3a82a10af7fb742a80e..b737883542b372d4cf7e2b7aa95f6fc45b1483d3 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -2171,9 +2171,6 @@
   v8_executable("mksnapshot") {
     visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
-    # This is executed on the host only and doesn't require PIE.
-    want_pie = false
-
     sources = [
       "src/snapshot/mksnapshot.cc",
     ]
@@ -2195,9 +2192,6 @@
   # table can built during build. The table depends on the properties of
   # bytecodes that are described in bytecodes.{cc,h}.
   visibility = [ ":*" ]  # Only targets in this file can depend on this.
-
-  # This is executed on the host only and doesn't require PIE.
-  want_pie = false
 
   sources = [
     "src/interpreter/bytecode-peephole-optimizer.h",