cc2520: Turn off auto ACK
cc2520: Turn off auto ACK

The auto ack does not seem to work properly. I am seeing that
the driver claims to have sent a packet but nothing is seen
in the air. Because of this the auto ACK cannot be turned on
right now as it would break connectivity.

Change-Id: I4e71e14a2058cc4f64740a8f4b390ba21a01cb23
Signed-off-by: Jukka Rissanen <f9f077d1da4c7aa947f9864fa5a28c3588f6a45d@linux.intel.com>

32bitmicro/zephyr,zephyriot/zephyr,kraj/zephyr,punitvara/zephyr,explora26/zephyr,erwango/zephyr,zephyrproject-rtos/zephyr,mbolivar/zephyr,fbsder/zephyr,kraj/zephyr,zephyriot/zephyr,mirzak/zephyr-os,tidyjiang8/zephyr-doc,zephyrproject-rtos/zephyr,nashif/zephyr,finikorg/zephyr,mirzak/zephyr-os,Vudentz/zephyr,explora26/zephyr,holtmann/zephyr,tidyjiang8/zephyr-doc,coldnew/zephyr-project-fork,bboozzoo/zephyr,tidyjiang8/zephyr-doc,runchip/zephyr-cc3200,explora26/zephyr,aceofall/zephyr-iotos,bboozzoo/zephyr,bigdinotech/zephyr,GiulianoFranchetto/zephyr,fractalclone/zephyr-riscv,runchip/zephyr-cc3200,Vudentz/zephyr,coldnew/zephyr-project-fork,finikorg/zephyr,finikorg/zephyr,32bitmicro/zephyr,runchip/zephyr-cc3220,erwango/zephyr,erwango/zephyr,GiulianoFranchetto/zephyr,aceofall/zephyr-iotos,aceofall/zephyr-iotos,coldnew/zephyr-project-fork,kraj/zephyr,runchip/zephyr-cc3200,punitvara/zephyr,galak/zephyr,Vudentz/zephyr,bigdinotech/zephyr,GiulianoFranchetto/zephyr,fractalclone/zephyr-riscv,erwango/zephyr,kraj/zephyr,galak/zephyr,32bitmicro/zephyr,punitvara/zephyr,aceofall/zephyr-iotos,fractalclone/zephyr-riscv,holtmann/zephyr,32bitmicro/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,bigdinotech/zephyr,kraj/zephyr,explora26/zephyr,32bitmicro/zephyr,zephyriot/zephyr,mirzak/zephyr-os,coldnew/zephyr-project-fork,ldts/zephyr,bigdinotech/zephyr,runchip/zephyr-cc3220,rsalveti/zephyr,sharronliu/zephyr,Vudentz/zephyr,runchip/zephyr-cc3200,bigdinotech/zephyr,runchip/zephyr-cc3220,sharronliu/zephyr,sharronliu/zephyr,tidyjiang8/zephyr-doc,rsalveti/zephyr,runchip/zephyr-cc3220,punitvara/zephyr,zephyrproject-rtos/zephyr,mbolivar/zephyr,nashif/zephyr,pklazy/zephyr,nashif/zephyr,sharronliu/zephyr,holtmann/zephyr,fbsder/zephyr,fbsder/zephyr,mirzak/zephyr-os,finikorg/zephyr,tidyjiang8/zephyr-doc,rsalveti/zephyr,pklazy/zephyr,Vudentz/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,Vudentz/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,ldts/zephyr,pklazy/zephyr,holtmann/zephyr,rsalveti/zephyr,fractalclone/zephyr-riscv,nashif/zephyr,mbolivar/zephyr,rsalveti/zephyr,runchip/zephyr-cc3220,coldnew/zephyr-project-fork,bboozzoo/zephyr,holtmann/zephyr,fbsder/zephyr,fractalclone/zephyr-riscv,zephyriot/zephyr,galak/zephyr,mirzak/zephyr-os,bboozzoo/zephyr,explora26/zephyr,zephyriot/zephyr,mbolivar/zephyr,fbsder/zephyr,punitvara/zephyr,sharronliu/zephyr,mbolivar/zephyr,runchip/zephyr-cc3200,aceofall/zephyr-iotos,erwango/zephyr,ldts/zephyr,galak/zephyr,ldts/zephyr,pklazy/zephyr,ldts/zephyr,pklazy/zephyr,nashif/zephyr,bboozzoo/zephyr