serial-getty service: Add linux as default TERM

In poky with systemd enabled, vt102 is selected for getty
causing user to experience a very crappy terminal. Default
TERM to linux.

Signed-off-by: Joel Fernandes <joelf@ti.com>
beaglebone-image: Add package management features

Signed-off-by: Joel Fernandes <joelf@ti.com>
beaglebone-image: Add strace

Signed-off-by: Joel Fernandes <joelf@ti.com>
meta-yocto: Make beaglebone the default machine, and add PRSERV for PR bumps

Signed-off-by: Joel Fernandes <joelf@ti.com>
beaglbone-image: Add cpufrequtils to image

Signed-off-by: Joel Fernandes <joelf@ti.com>