ARM: qcom_defconfig: add display-related options

Add the CMA (Contiguous Memory Allocator) for the MSM DRM/KMS driver,
the simple panel, and the TI LM3630A driver in order to support the
display on the LG Nexus 5 (hammerhead) phone.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>