[meta-freescale] IMAGE_BOOTLOADER vs. PREFERRED_PROVIDER_virtual/bootloader

[Mario Domenech Goulart]

Hi,

I'm making a script to extract data out of bitbake's cache metadata and
stumbled upon IMAGE_BOOTLOADER.

Is there any special reason to use IMAGE_BOOTLOADER instead of
PREFERRED_PROVIDER_virtual/bootloader?

Best wishes.
Mario
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