Update bsp for mini2440#3532

Merged

BernardXiong merged 2 commits intoRT-Thread:masterfrom

qzhang1535:br_mini2440

Apr 17, 2020

Commits on Apr 14, 2020

1. Add 4.3 inch lcd(480x272) support for mini2440
qzhang1535
committed

Commits on Apr 15, 2020

1. Modify the file indention
qzhang1535
committed