py: Change ifdef DEBUG_PRINT to if DEBUG_PRINT.

[IhorNehrutsa]

#if DEBUG_PRINT is used 7 times

#ifdef DEBUG_PRINT is used 3 times.

Make them the same #if DEBUG_PRINT.

[github-actions]

Code size report:

   bare-arm:    +0 +0.000% 
minimal x86:    +0 +0.000% 
   unix x64:    +0 +0.000% standard
      stm32:    +0 +0.000% PYBV10
     mimxrt:    +0 +0.000% TEENSY40
        rp2:    +0 +0.000% RPI_PICO
       samd:    +0 +0.000% ADAFRUIT_ITSYBITSY_M4_EXPRESS

[codecov]

Codecov Report

Merging #12520 (cce0635) into master (2fcd28f) will not change coverage.
The diff coverage is n/a.

❗ Current head cce0635 differs from pull request most recent head d83c1a4. Consider uploading reports for the commit d83c1a4 to get more accurate results

@@           Coverage Diff           @@
##           master   #12520   +/-   ##
=======================================
  Coverage   98.39%   98.39%           
=======================================
  Files         158      158           
  Lines       20938    20938           
=======================================
  Hits        20601    20601           
  Misses        337      337           

Files	Coverage Δ
py/emitglue.c	100.00% <ø> (ø)
py/emitnative.c	99.31% <ø> (ø)

[dpgeorge]

Thank you.