libnspr: use the BR2_ARM_CPU_ARMV7A option

The libnspr --enable-thumb2 option was only enabled on Cortex-A8 and
Cortex-A9. This commit switches to using BR2_ARM_CPU_ARMV7A instead,
which will allow using Thumb2 for this package even with the other
Cortex-A cores.

[Peter: use BR2_ARM_CPU_HAS_THUMB2 instead]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libnspr/libnspr.mk

@@ -22,7 +22,7 @@ LIBNSPR_CONF_OPTS += --$(if $(BR2_ARCH_IS_64),en,dis)able-64bit
 LIBNSPR_CONF_OPTS += --$(if $(BR2_INET_IPV6),en,dis)able-ipv6
 
 ifeq ($(BR2_arm),y)
-ifeq ($(BR2_cortex_a8)$(BR2_cortex_a9),y)
+ifeq ($(BR2_ARM_CPU_HAS_THUMB2),y)
 LIBNSPR_CONF_OPTS += --enable-thumb2
 else
 LIBNSPR_CONF_OPTS += --disable-thumb2