Bluetooth: Fix hci_raw's RX buffer alloc
Bluetooth: Fix hci_raw's RX buffer alloc

The APIs for allocating RX buffers were modified recently and hci_raw
had not reflected those changes properly.

Signed-off-by: Carles Cufi <853081dc8dca4fe6a7e3c984752718b5db36e060@nordicsemi.no>

zephyrproject-rtos/zephyr,Vudentz/zephyr,finikorg/zephyr,aceofall/zephyr-iotos,ldts/zephyr,kraj/zephyr,mbolivar/zephyr,kraj/zephyr,explora26/zephyr,holtmann/zephyr,zephyrproject-rtos/zephyr,punitvara/zephyr,fbsder/zephyr,galak/zephyr,erwango/zephyr,galak/zephyr,aceofall/zephyr-iotos,zephyrproject-rtos/zephyr,zephyriot/zephyr,punitvara/zephyr,runchip/zephyr-cc3220,zephyrproject-rtos/zephyr,nashif/zephyr,holtmann/zephyr,galak/zephyr,holtmann/zephyr,bigdinotech/zephyr,fbsder/zephyr,runchip/zephyr-cc3220,finikorg/zephyr,explora26/zephyr,explora26/zephyr,mbolivar/zephyr,rsalveti/zephyr,mbolivar/zephyr,zephyriot/zephyr,explora26/zephyr,explora26/zephyr,fbsder/zephyr,aceofall/zephyr-iotos,aceofall/zephyr-iotos,fbsder/zephyr,GiulianoFranchetto/zephyr,zephyriot/zephyr,GiulianoFranchetto/zephyr,ldts/zephyr,fbsder/zephyr,ldts/zephyr,fractalclone/zephyr-riscv,erwango/zephyr,galak/zephyr,GiulianoFranchetto/zephyr,Vudentz/zephyr,pklazy/zephyr,bigdinotech/zephyr,nashif/zephyr,aceofall/zephyr-iotos,bigdinotech/zephyr,erwango/zephyr,kraj/zephyr,runchip/zephyr-cc3220,sharronliu/zephyr,punitvara/zephyr,holtmann/zephyr,punitvara/zephyr,rsalveti/zephyr,pklazy/zephyr,fractalclone/zephyr-riscv,Vudentz/zephyr,rsalveti/zephyr,bigdinotech/zephyr,fractalclone/zephyr-riscv,fractalclone/zephyr-riscv,nashif/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,nashif/zephyr,sharronliu/zephyr,finikorg/zephyr,zephyriot/zephyr,holtmann/zephyr,kraj/zephyr,zephyrproject-rtos/zephyr,pklazy/zephyr,bigdinotech/zephyr,pklazy/zephyr,kraj/zephyr,finikorg/zephyr,finikorg/zephyr,mbolivar/zephyr,sharronliu/zephyr,sharronliu/zephyr,rsalveti/zephyr,rsalveti/zephyr,nashif/zephyr,erwango/zephyr,ldts/zephyr,fractalclone/zephyr-riscv,pklazy/zephyr,ldts/zephyr,sharronliu/zephyr,GiulianoFranchetto/zephyr,Vudentz/zephyr,erwango/zephyr,Vudentz/zephyr,galak/zephyr,runchip/zephyr-cc3220,zephyriot/zephyr,mbolivar/zephyr,runchip/zephyr-cc3220,punitvara/zephyr