python-numpy: introduce ARCH_SUPPORTS hidden variable

Some packages selects python-numpy. This package has a some CPU specific
code. To simplify and avoid duplicate dependencies this patch introduce an
hidden ARCH_SUPPORTS variable.

[Thomas: fix the definition of the new option to make sure its value
is actually 'y' when a supported architecture is used.]

Signed-off-by: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reviewed-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/python-numpy/Config.in

@@ -1,9 +1,13 @@
-config BR2_PACKAGE_PYTHON_NUMPY
-	bool "python-numpy"
+config BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
+	bool
 	# Numpy has some CPU specific code
-	depends on BR2_aarch64 || BR2_arm || BR2_armeb || BR2_i386 \
+	default y if BR2_aarch64 || BR2_arm || BR2_armeb || BR2_i386 \
 		|| BR2_mips || BR2_mipsel || BR2_powerpc || BR2_powerpc64 \
 		|| BR2_sh || BR2_x86_64
+
+config BR2_PACKAGE_PYTHON_NUMPY
+	bool "python-numpy"
+	depends on BR2_PACKAGE_PYTHON_NUMPY_ARCH_SUPPORTS
 	help
 	  NumPy is the fundamental package for scientific computing
 	  with Python.