controller: Disable packet boundary on Intel AC7265

Intel AC7265 claims the support of the packet boundary feature but is
not working properly and affect l2cap stability. This patch identifies
the chip through LMP version and overwrites the flag.

Bug: 306542979
Tag: #floss
Test: mmm packages/modules/Bluetooth
Test: manual switch between A2DP and HFP frequently
Flag: EXEMPT, Floss-only changes as Android doesn't use Intel chip
Change-Id: I2b5ef5067add12933d60d16251701d1642d2d01d