Use uart1 for dfu

[yml]

Hello, when I conducted DFU experiment for NRF5340DK in NCS2.2.0， In ncs2.2\v2.2.0\zephyr\samples\subsys\mgmt\mcumgr\smp_svr project ,configuration selects both overlay-bt.conf and overlay-serial.conf. The result is that it cannot be upgraded with Bluetooth DFU or UART DFU. The debugging found that uart0 is used by both UART dfu and bluetooth DFU. How to configure the project to use uart1 for UART DFU? Can Bluetooth DFU turn off the use of uart0?

[Sigurd]

Hi,

Create a overlay file, and do something like this:

/ {
	chosen {
		zephyr,uart-mcumgr = &uart1;
	};
};