toolchain: remove obsolete kernel version check

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 47413

toolchain/kernel-headers/Makefile

@@ -57,7 +57,7 @@ ifneq ($(CONFIG_mips)$(CONFIG_mipsel),)
 	$(CP) \
 		$(HOST_BUILD_DIR)/arch/mips/include/asm/asm.h \
 		$(HOST_BUILD_DIR)/arch/mips/include/asm/regdef.h \
-		$(if $(call kernel_patchver_ge,3.15.0),$(HOST_BUILD_DIR)/arch/mips/include/asm/asm-eva.h) \
+		$(HOST_BUILD_DIR)/arch/mips/include/asm/asm-eva.h \
 		$(BUILD_DIR_TOOLCHAIN)/linux-dev/include/asm/
   endef
 endif