Replace devfdt_get_addr_ptr() with dev_read_addr_ptr() when retrieving the
register base address.
dev_read_addr_ptr() supports both live device tree and flat DT backends,
avoiding direct dependency on devfdt_* helpers.
No functional changes.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Tested-by: Manikandan Muralidharan <manikandan.m@microchip.com>