syslog: net: Fix multiple network interface selection for IPv4
syslog: net: Fix multiple network interface selection for IPv4

In IPv4 we need to select the network interface, where the packet
is to be sent, using the IPv4 address instead of default network
interface.

Signed-off-by: Jukka Rissanen <f9f077d1da4c7aa947f9864fa5a28c3588f6a45d@linux.intel.com>

Vudentz/zephyr,nashif/zephyr,galak/zephyr,kraj/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyriot/zephyr,ldts/zephyr,GiulianoFranchetto/zephyr,punitvara/zephyr,ldts/zephyr,punitvara/zephyr,mbolivar/zephyr,kraj/zephyr,zephyrproject-rtos/zephyr,zephyriot/zephyr,explora26/zephyr,Vudentz/zephyr,finikorg/zephyr,zephyriot/zephyr,kraj/zephyr,mbolivar/zephyr,mbolivar/zephyr,punitvara/zephyr,GiulianoFranchetto/zephyr,GiulianoFranchetto/zephyr,nashif/zephyr,Vudentz/zephyr,mbolivar/zephyr,explora26/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,ldts/zephyr,Vudentz/zephyr,punitvara/zephyr,punitvara/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,mbolivar/zephyr,kraj/zephyr,explora26/zephyr,GiulianoFranchetto/zephyr,explora26/zephyr,nashif/zephyr,zephyriot/zephyr,finikorg/zephyr,nashif/zephyr,explora26/zephyr,ldts/zephyr,kraj/zephyr,galak/zephyr,Vudentz/zephyr,nashif/zephyr,ldts/zephyr,zephyriot/zephyr