ARM: dts: msm8226: Add charging notification support of leds

On MSM8226 CDP/MTP, set the default-trigger device
tree property value of red led with "battery-charging",
and set that of green led with "battery-full.

CRs-fixed: 533938
Change-Id: I5d87381238bec9923a8d5e327b8a7d253b3fc06d
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>