[klibc] Disable PIE

We link all executables as non-relocatable, so it makes no sense to
generate PIE code.  In addition, PIE code on i386 requires a working
GOT which we don't generate.

Link: https://www.zytor.com/pipermail/klibc/2019-January/004028.html
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
diff --git a/scripts/Kbuild.klibc b/scripts/Kbuild.klibc
index f147a37..35c375e 100644
--- a/scripts/Kbuild.klibc
+++ b/scripts/Kbuild.klibc
@@ -67,7 +67,8 @@
 # ---------------------------------------------------------------------------
 
 KLIBCREQFLAGS     := $(call cc-option, -fno-stack-protector, ) \
-                     $(call cc-option, -fwrapv, )
+                     $(call cc-option, -fwrapv, ) \
+                     $(call cc-option, -fno-PIE, )
 KLIBCARCHREQFLAGS :=
 KLIBCOPTFLAGS     :=
 KLIBCWARNFLAGS    := -W -Wall -Wno-sign-compare -Wno-unused-parameter