musl: add ppcle subarch to get correct dynamic linker name

srcpkgs/musl/patches/ppcle.patch

@@ -0,0 +1,24 @@
+From 20dfc2002482a21b955b710af119a01aecee784b Mon Sep 17 00:00:00 2001
+From: Daniel Kolesa <daniel@octaforge.org>
+Date: Tue, 15 Dec 2020 20:42:17 +0100
+Subject: [PATCH] add ppc32 le subarch
+
+---
+ configure | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git configure configure
+index 8680128..f1ca58e 100755
+--- configure
++++ configure
+@@ -645,6 +645,7 @@ fi
+ if test "$ARCH" = "powerpc" ; then
+ trycppif "__NO_FPRS__ && !_SOFT_FLOAT" "$t" && fail \
+   "$0: error: compiler's floating point configuration is unsupported"
++trycppif __LITTLE_ENDIAN__ "$t" && SUBARCH=${SUBARCH}le
+ trycppif _SOFT_FLOAT "$t" && SUBARCH=${SUBARCH}-sf
+ fi
+ 
+-- 
+2.29.2
+