Bluetooth: L2CAP: Remove RECV_RESERVE from BT_L2CAP_RX_MTU
Bluetooth: L2CAP: Remove RECV_RESERVE from BT_L2CAP_RX_MTU

The BT_L2CAP_RX_MTU is counted starting with the BLUETOOTH_RX_BUF_LEN
variable, which doesn't include the BLUETOOTH_HCI_RECV_RESERVE
contribution (this would only be valid if we started subtracting from
BT_BUF_RX_SIZE).

Change-Id: I1ab3eaf8907946c56c2a9fe16b2074f3a3027a0f
Signed-off-by: Johan Hedberg <628991c7b0a19c384f9b99c21ec330ce952bb838@intel.com>

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