glibc: fix annoying build warnings with ppcle

srcpkgs/glibc/patches/ppcle-floatn_h.patch

@@ -0,0 +1,29 @@
+From a4b55a7943160cf07928e551b766432d4df93a8a Mon Sep 17 00:00:00 2001
+From: Daniel Kolesa <daniel@octaforge.org>
+Date: Wed, 16 Dec 2020 07:36:38 +0100
+Subject: [PATCH] explicitly check __powerpc64__ in floatn.h for ppcle builds
+
+otherwise the build is spammed with warnings about _CALL_ELF not
+being defined when building for ppcle, which is harmless but still
+annoying
+---
+ sysdeps/powerpc/bits/floatn.h | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/sysdeps/powerpc/bits/floatn.h b/sysdeps/powerpc/bits/floatn.h
+index cb97184..13e473b 100644
+--- a/sysdeps/powerpc/bits/floatn.h
++++ b/sysdeps/powerpc/bits/floatn.h
+@@ -25,7 +25,8 @@
+ /* Defined to 1 if the current compiler invocation provides a
+    floating-point type with the IEEE 754 binary128 format, and this glibc
+    includes corresponding *f128 interfaces for it.  */
+-#if defined _ARCH_PWR8 && defined __LITTLE_ENDIAN__ && (_CALL_ELF == 2) \
++#if defined _ARCH_PWR8 && defined __LITTLE_ENDIAN__ \
++    && defined __powerpc64__ && (_CALL_ELF == 2) \
+     && defined __FLOAT128__ && !defined __NO_LONG_DOUBLE_MATH
+ # define __HAVE_FLOAT128 1
+ #else
+-- 
+2.29.2
+