lk2nd 0.7.0

- Add new supported devices
- Initial support for MSM8226 and MSM8974 (no devices supported yet)
- Some display fixes
- Fix "Couldn't parse partition size '0x'" with newer fastboot versions
- Reduce size of lk2nd image significantly by removing secure boot code
  - Real boot image is now placed at 512 KiB offset instead of 1 MiB
- Fix "[Firmware Bug]: Kernel image misaligned at boot" for mainline kernels
- Stop generating Android kernel cmdline for mainline
- Introduce panel selection for mainline to support multiple panels per device

Supported devices:
- Alcatel OneTouch Idol 3 (4.7) - 6039*
- Alcatel OneTouch Idol 3 (5.5) - 6045*
- Asus Zenfone 2 Laser (720p) - Z00L
- Asus Zenfone 2 Laser (1080p) - Z00T
- Asus Zenfone Max ZC550KL (2016) - Z010D
- BQ Aquaris X5 (paella, picmt)
- Lenovo A6000
- Lenovo A6010
- Lenovo PHAB Plus - PB1-770M, PB1-770N
- LG K10 (m216) - K420 (see notes in `dts/msm8916-lg.dts` for now)
- Marshall London
- Motorola Moto E (2015, surnia)
- Motorola Moto G4 Play (harpia)
- Samsung Galaxy A3 (2015) - SM-A300FU
- Samsung Galaxy A5 (2015) - SM-A500F, SM-A500FU
- Samsung Galaxy Grand Prime - SM-G530W
- Samsung Galaxy J3 (2016) - SM-J3109
- Samsung Galaxy J3 Pro - SM-J3110, SM-J3119
- Samsung Galaxy J5 (2015) - SM-J5008, SM-J500F, SM-J500FN, SM-J500H
- Samsung Galaxy J5 (2016) - SM-J5108, SM-J510F, SM-J510FN
- Samsung Galaxy J7 (2015) - SM-J7008, SM-J700P
- Samsung Galaxy On7 (2015) - SM-G6000
- Samsung Galaxy S4 Mini Value Edition - GT-I9195I
- Samsung Galaxy Tab 4 10.1 (2015) - SM-T533
- Samsung Galaxy Tab A 8.0 LTE (2015) - SM-T357W
- Samsung Galaxy Tab A 9.7 WiFi (2015) - SM-T550
- Vodafone Smart prime 6
- Wileyfox Swift
- Xiaomi Mi 4i
- Xiaomi Redmi 2 (wt86047, wt88047)