package/python-greenlet: really enable for i386

Commit 30f1decec2c (package/python-greenlet: enable only on supported
architectures) mis-typed the architecture name fox 286-32: BR2_x86
doesn't exist in buildroot; it is BR2_i386.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
[yann.morin.1998@free.fr:
  - just do the s/x86/i386/ fix for easy backport
  - x86_64 split off to its own patch
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/python-greenlet/Config.in

@@ -8,7 +8,7 @@ config BR2_PACKAGE_PYTHON_GREENLET_ARCH_SUPPORTS
 	default y if BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le
 	default y if BR2_riscv
 	default y if BR2_sparc || BR2_sparc64
-	default y if BR2_x86
+	default y if BR2_i386
 
 config BR2_PACKAGE_PYTHON_GREENLET
 	bool "python-greenlet"