The i.MX6ULL has a WDOG3 located at start address 0x021E0000 in the
AIPS-2 memory region [1].
[1] i.MX 6ULL Applications Processor Reference Manual, Rev. 1, 11/2017,
Table 2-3. AIPS-2 memory map, p. 178
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>