libfdt: Fix sw_tree1 testcase

[Jon Loeliger]

So, like, the other day David Gibson mumbled:
> There is a bug in the sw_tree1 testcase / utility which puts two
> "compatible" properties in one node in the output tree.  This patch
> fixes the bug, and also adds a new test checking that the sw_tree1
> output is equal to test_tree1.dtb as its supposed to be, which should
> catch future errors of this type.
> 
> Signed-off-by: David Gibson <david at gibson.dropbear.id.au>

This change appears to cause a test to fail.
I've not looked into it beyond "make check failed":

Thanks,
jdl

----------------------------------------------------------------

[ snip ]

nop_node rw_tree1.test.dtb:     PASS
setprop rw_tree1.test.dtb:      PASS
del_property rw_tree1.test.dtb: PASS
del_node rw_tree1.test.dtb:     PASS
dtbs_equal_ordered test_tree1.dtb rw_tree1.test.dtb:    FAIL    Property name mismatch "compatible" != "prop-str" at (8, 8)
truncated_property:     PASS
dtc.sh -I dts -O dtb -o dtc_tree1.test.dtb test_tree1.dts:      PASS
get_mem_rsv dtc_tree1.test.dtb: PASS
root_node dtc_tree1.test.dtb:   PASS

[ snip ]

del_node dtc_tree1.test.dtb:    PASS
dtbs_equal_ordered dtc_tree1.test.dtb test_tree1.dtb:   PASS
dtc.sh -I dts -O dtb -o dtc_escapes.test.dtb escapes.dts:       PASS
string_escapes dtc_escapes.test.dtb:    PASS
********** TEST SUMMARY
*     Total testcases:  1216
*                PASS:  1215
*                FAIL:  1
*   Bad configuration:  0
* Strange test result:  0
**********