Pyra DT: workaround for two issues coming from using cpu0 or cpu1 as led-triggers for leds connected through I2C5
it appears that using an I2C based led expander can raise bus load to a level where i2c activity triggers the leds again
this makes approx. 30% load on one OMAP5 core through an irq worker and raises the SoC temperature significantly

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Pyra DT: enable CKOBUFFER_CLK_EN which should make high performance audio with the TWL6040 work

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>