掌機 - Miyoo A30 - 解決Cannot link shader program object: L0010 Uniform love_UniformsPerDraw2 differ on precision問題

問題如下：

Oops! Something went wrong: 
Cannot link shader program object
L0010 Uniform love_UniformsPerDraw2 diff on precision

解法如下：

#define LOVE_HIGHP_OR_MEDIUMP mediump