lib: utils/reset: Add litex SoC reset driver

Litex SoC controller supports reboot function by toggling the first
bit of the ctrl register. Add a reset driver so other software can
use it.

Signed-off-by: Inochi Amaoto <inochiama@gmail.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20260529085234.1682842-1-inochiama@gmail.com
Signed-off-by: Anup Patel <anup@brainfault.org>

lib/utils/reset/Kconfig

@@ -24,6 +24,11 @@ config FDT_RESET_HTIF
 	select SYS_HTIF
 	default n
 
+config FDT_RESET_LITEX
+	bool "LITEX SoC reset driver"
+	depends on FDT_GPIO
+	default n
+
 config FDT_RESET_RPMI
 	bool "RPMI FDT reset driver"
 	depends on FDT_MAILBOX && RPMI_MAILBOX