Bluetooth: Add option for PM with Nordic BLE chip
Bluetooth: Add option for PM with Nordic BLE chip

The config option handles enabling, disabling and power management
operations with Nordic nRF51 BLE chip.

Change-Id: I816062a7fb17c9e57c234113a2cecdebceb407b6
Signed-off-by: Andrei Emeltchenko <a6565233ddc88e4fb9c66c1d70743223493f2ed4@intel.com>

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