dtc: change default phandles to ePAPR style instead of both

Currently, both legacy (linux,phandle) and ePAPR (phandle) properties
are inserted into dtbs by default. The newer ePAPR style has been
supported in dtc and Linux kernel for 7 years. That should be a long
enough transition period. We can save a little space by not putting both
into the dtb.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

dtc.c

@@ -31,7 +31,7 @@ int reservenum;		/* Number of memory reservation slots */
 int minsize;		/* Minimum blob size */
 int padsize;		/* Additional padding to blob */
 int alignsize;		/* Additional padding to blob accroding to the alignsize */
-int phandle_format = PHANDLE_BOTH;	/* Use linux,phandle or phandle properties */
+int phandle_format = PHANDLE_EPAPR;	/* Use linux,phandle or phandle properties */
 int generate_symbols;	/* enable symbols & fixup support */
 int generate_fixups;		/* suppress generation of fixups on symbol support */
 int auto_label_aliases;		/* auto generate labels -> aliases */

tests/run_tests.sh

@@ -428,7 +428,7 @@ dtc_tests () {
     run_dtc_test -I dts -O dtb -o dtc_path-references.test.dtb path-references.dts
     run_test path-references dtc_path-references.test.dtb
 
-    run_test phandle_format dtc_references.test.dtb both
+    run_test phandle_format dtc_references.test.dtb epapr
     for f in legacy epapr both; do
 	run_dtc_test -I dts -O dtb -H $f -o dtc_references.test.$f.dtb references.dts
 	run_test phandle_format dtc_references.test.$f.dtb $f