As per R01UH0914EJ0130 Rev.1.30 HW manual the MTU3 overflow/underflow
interrupt names start with 'tci' instead of 'tgi'.

Replace the below overflow/underflow interrupt names:
 - tgiv0->tciv0
 - tgiv1->tciv1
 - tgiu1->tciu1
 - tgiv2->tciv2
 - tgiu2->tciu2
 - tgiv3->tciv3
 - tgiv4->tciv4
 - tgiv6->tciv6
 - tgiv7->tciv7
 - tgiv8->tciv8
 - tgiu8->tciu8

Fixes: 26336d66 ("arm64: dts: renesas: r9a07g044: Add MTU3a node")
Fixes: dd123dd0 ("arm64: dts: renesas: r9a07g054: Add MTU3a node")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230724091927.123847-5-biju.das.jz@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>