LVGL视频教程中，下载的img，在板子上运行，发现显示有偏移
然后查看视频教程中，显示向左偏移了。
可以修改uboot设备树，修改如下：
&lcd0 {
/* part 1 */
lcd_used = <1>;
lcd_driver_name = “default_lcd”;
lcd_backlight = <100>;
/* part 2 */
lcd_if = <0>;
lcd_hv_if = <0>;
/* part 3 */
lcd_x = <1024>;
lcd_y = <600>;
lcd_width = <280>;
lcd_height = <150>;
lcd_dclk_freq = <51>;
lcd_hbp = <160>;
lcd_ht = <1344>;
lcd_hspw = <20>;
lcd_vbp = <23>;
lcd_vt = <635>;
lcd_vspw = <3>;
lcd_pwm_used = <1>;
lcd_pwm_ch = <7>;
lcd_pwm_freq = <500>;
lcd_pwm_pol = <1>;
/* part 5 */
lcd_frm = <1>;
lcd_io_phase = <0x0000>;
lcd_gamma_en = <0>;
lcd_cmap_en = <0>;
lcd_hv_clk_phase = <0>;
lcd_hv_sync_polarity= <0>;
/* part 6 */
lcd_power = "vcc-lcd";
lcd_pin_power = "vcc-pd";
pinctrl-0 = <&rgb18_pins_a>;
pinctrl-1 = <&rgb18_pins_b>;
};