gpio: aspeed: fix AST2700 debounce selector bit definitions

gpio: aspeed: fix AST2700 debounce selector bit definitions

The AST2700 datasheet defines reg_debounce_sel1 as the low bit and
reg_debounce_sel2 as the high bit. The current driver uses the AST2600
mapping instead, where sel1 is the high bit and sel2 is the low bit.

As a result, the debounce selector bits are programmed in reverse on
AST2700. Swap the G7 sel1/sel2 bit definitions so the driver matches the
hardware definition.

Fixes: b2e861bd1eaf ("gpio: aspeed: Support G7 Aspeed gpio controller")
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Link: https://patch.msgid.link/20260415-gpio-fix-v1-1-b08a89b31e6f@aspeedtech.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>