[platform][msm_shared][i2c_qup] fix return types
[include][debug] use -1 as value for ALWAYS so we can detect the difference
[target][msm8960_aries][target_display] optimize backlight debug
[target][msm8960_aries][oem_panel] ignore empty panel names
[platform][msm8960][gpio] reduce debug output
[app][display_server][display_server] getkey: add delay of 1ms

this prevents unwanted keypresses when the gpio states change very fast.
[app][aboot][grub] add support for loading GRUB at a virtual address
[app][aboot][uboot_api][api] use fbcon_flush
[app][aboot][uboot_api][api] reduce getkey delay to 1ms

this seems to be enough and should reduce lags for slow devices