Update Lvgl to v6.0

bitsk · bitsk · commit b47d512182bf · 2019-07-15T18:43:08.000+08:00
diff --git a/libraries/lv_maixduino b/libraries/lv_maixduino
@@ -1 +1 @@
-Subproject commit 695de9e567ec674fc865f5973439e3aea0525e09
+Subproject commit 6bcae290e53020bd4abbc089fd483635df3b0a3d

Original file line number	Diff line number	Diff line change
`@@ -1 +1 @@`
`1`		`-Subproject commit 695de9e567ec674fc865f5973439e3aea0525e09`
	`1`	`+Subproject commit 6bcae290e53020bd4abbc089fd483635df3b0a3d`