package/tesseract-ocr: override neon check

Override neon check to avoid the following build failure with uclibc-ng
raised since bump to version 5.0.1 in commit
df3f0c226fccd8d6143b09a1e05a0f5f23587136:

src/arch/simddetect.cpp:61:14: fatal error: sys/auxv.h: No such file or directory
   61 | #    include <sys/auxv.h>
      |              ^~~~~~~~~~~~

It should be noted that a patch to properly fix this build failure was
rejected by upstream as "ARM support without NEON would result in a very
slow Tesseract": https://github.com/tesseract-ocr/tesseract/pull/3717

So, a follow-up patch adding a dependency on !BR2_TOOLCHAIN_USES_UCLIBC
for all CPU architectures or only for ARM without NEON could be
approriate.

Fixes:
 - http://autobuild.buildroot.org/results/0bac6491188b6681df2ca13eb230706e83cbb130

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>

package/tesseract-ocr/tesseract-ocr.mk

@@ -24,6 +24,12 @@ TESSERACT_OCR_CONF_ENV = \
 TESSERACT_OCR_CONF_OPTS = \
 	--disable-opencl
 
+ifeq ($(BR2_ARM_CPU_HAS_NEON),y)
+TESSERACT_OCR_CONF_ENV += ax_cv_check_cxxflags__mfpu_neon=yes
+else
+TESSERACT_OCR_CONF_ENV += ax_cv_check_cxxflags__mfpu_neon=no
+endif
+
 # Language data files download
 ifeq ($(BR2_PACKAGE_TESSERACT_OCR_LANG_ENG),y)
 TESSERACT_OCR_DATA_FILES += eng.traineddata