xtensa: fix DTC warning unit_address_format
DTC issues the following warnings when building xtfpga device trees:
/soc/flash@
00000000/partition@0x0: unit name should not have leading "0x"
/soc/flash@
00000000/partition@0x6000000: unit name should not have leading "0x"
/soc/flash@
00000000/partition@0x6800000: unit name should not have leading "0x"
/soc/flash@
00000000/partition@0x7fe0000: unit name should not have leading "0x"
Drop leading 0x from flash partition unit names.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>