[MTK] Add LCM driver

========================================================================
/device/project/ProjectConfig.mk
========================================================================
CUSTOM_KERNEL_LCM = abc_hd720_dsi_vdo
CUSTOM_LK_LCM = abc_hd720_dsi_vdo
CUSTOM_UBOOT_LCM = abc_hd720_dsi_vdo


========================================================================
/vendor/mediatek/proprietary/bootable/bootloader/lk/project/project.mk
========================================================================
CUSTOM_LK_LCM="abc_hd720_dsi_vdo"


========================================================================
/kernel-4.4/drivers/misc/mediatek/lcm/mt65xx_lcm_list.c
========================================================================
LCM_DRIVER *lcm_driver_list[] = {
...
#if defined(ABC_HD720_DSI_VDO)
&abc_hd720_dsi_vdo_lcm_drv,
#endif
};

unsigned char lcm_name_list[][128] = {
...
#if defined(ABC_HD720_DSI_VDO)
"abc_hd720_dsi_vdo",
#endif
};


========================================================================
/kernel-4.4/drivers/misc/mediatek/lcm/mt65xx_lcm_list.h
========================================================================
extern LCM_DRIVER abc_hd720_dsi_vdo_lcm_drv;


========================================================================
/vendor/mediatek/proprietary/bootable/bootloader/lk/dev/lcm/mt65xx_lcm_list.c
========================================================================
extern LCM_DRIVER abc_hd720_dsi_vdo_lcm_drv;

LCM_DRIVER *lcm_driver_list[] = {
...
#if defined(ABC_HD720_DSI_VDO)
&abc_hd720_dsi_vdo_lcm_drv,
#endif
};

unsigned char lcm_name_list[][128] = {
...
#if defined(ABC_HD720_DSI_VDO)
"abc_hd720_dsi_vdo",
#endif
};

========================================================================
/kernel-4.4/drivers/misc/mediatek/lcm/
/vendor/mediatek/proprietary/bootable/bootloader/lk/dev/lcm/
========================================================================
add "abc_hd720_dsi_vdo" folder to put driver and makefile

========================================================================
/vendor/mediatek/proprietary/bootable/bootloader/lk/dev/lcm/abc_hd720_dsi_vdo
========================================================================
$ ln -s ../../../../../../../../../kernel-4.4/drivers/misc/mediatek/lcm/abc_hd720_dsi_vdo/abc_hd720_dsi_vdo.c abc_hd720_dsi_vdo.c