Redefinition of MIN is avoided in midi.c

[3araht]

Description

It showed an error when tmk_core/protocol/midi/midi.c was included.

Error:

Compiling: tmk_core/protocol/midi/midi.c                                                           tmk_core/protocol/midi/midi.c:22: error: "MIN" redefined [-Werror]
 #define MIN(x, y) (((x) < (y)) ? (x) : (y))

The same method applied to rgblight.c, audio.h, vilocikey.c, color.c and util.h is used to solve it.

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout/userspace (addition or update)
• Documentation

Issues Fixed or Closed by This PR

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).