external/trace: Fix endianness detection in Makefile
The Makefile for the dump_trace tool does not correctly determine
endianness on Power. Instead Big Endian is always used on Power. Fix so
Little Endian will be detected.
-HOSTEND=$(shell uname -m | sed -e 's/^i.*86$$/LITTLE/' -e 's/^x86.*/LITTLE/' -e 's/^ppc.*/BIG/')
+HOSTEND=$(shell uname -m | sed -e 's/^i.*86$$/LITTLE/' -e 's/^x86.*/LITTLE/' -e 's/^ppc64le/LITTLE/' -e 's/^ppc.*/BIG/')
CFLAGS=-g -Wall -DHAVE_$(HOSTEND)_ENDIAN -I../../include -I../../
dump_trace: dump_trace.c
