emul: Fix emul_espi_host.c type coercion
emul: Fix emul_espi_host.c type coercion

The data_host variable in the emul_espi_host_send_cw function should be
assigned the espi host emulator data and not the espi_emul data.

Assign the variable to correct reference.

Signed-off-by: Aaron Massey <79529a820df71f45023239a3663736629646cc34@google.com>

zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr