mfd: rz-mtu3: Fix MTU5 NFCR register offset

commit da32b0e8 upstream.

The NFCR register for MTU5 is at 0x1a95 offset according to Datasheet
Page 725, Table 16.4. The address of all registers is offset by 0x1200,
making the proper address of MTU5 NFCR register be 0x895.

Cc: stable@vger.kernel.org
Fixes: 654c293e ("mfd: Add Renesas RZ/G2L MTU3a core driver")
Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20250910175914.12956-1-cosmin-gabriel.tanislav.xa@renesas.com


Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>