Fix linker error when rgblight and RGB Matrix are both enabled

[fauxpark]

Description

 | 
 | /usr/local/opt/avr-binutils/bin/avr-ld: .build/obj_planck_light_drashna/color.o (symbol from plugin): in function `hsv_to_rgb_impl':
 | (.text+0x0): multiple definition of `hsv_to_rgb_impl'; .build/obj_planck_light_drashna/quantum/color.o (symbol from plugin):(.text+0x0): first defined here
 | /usr/local/opt/avr-binutils/bin/avr-ld: .build/obj_planck_light_drashna/color.o (symbol from plugin): in function `hsv_to_rgb_impl':
 | (.text+0x0): multiple definition of `hsv_to_rgb'; .build/obj_planck_light_drashna/quantum/color.o (symbol from plugin):(.text+0x0): first defined here
 | /usr/local/opt/avr-binutils/bin/avr-ld: .build/obj_planck_light_drashna/color.o (symbol from plugin): in function `hsv_to_rgb_impl':
 | (.text+0x0): multiple definition of `hsv_to_rgb_nocie'; .build/obj_planck_light_drashna/quantum/color.o (symbol from plugin):(.text+0x0): first defined here
 | collect2: error: ld returned 1 exit status

Presumably caused by the creation of two object files from color.c in different build directories.

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).