package/igh-ethercat: cleanup conditional multi assignments

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 3ccf0abeeea242a9c95b0ef09c65cb10e1fa93ef)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/igh-ethercat/igh-ethercat.mk

@@ -13,14 +13,13 @@ IGH_ETHERCAT_LICENSE_FILES = COPYING COPYING.LESSER
 IGH_ETHERCAT_INSTALL_STAGING = YES
 
 IGH_ETHERCAT_CONF_OPTS = \
-	--with-linux-dir=$(LINUX_DIR)
-
-IGH_ETHERCAT_CONF_OPTS += $(if $(BR2_INSTALL_LIBSTDCPP),--enable-tool,--disable-tool)
-IGH_ETHERCAT_CONF_OPTS += $(if $(BR2_PACKAGE_IGH_ETHERCAT_8139TOO),--enable-8139too,--disable-8139too)
-IGH_ETHERCAT_CONF_OPTS += $(if $(BR2_PACKAGE_IGH_ETHERCAT_E100),--enable-e100,--disable-e100)
-IGH_ETHERCAT_CONF_OPTS += $(if $(BR2_PACKAGE_IGH_ETHERCAT_E1000),--enable-e1000,--disable-e1000)
-IGH_ETHERCAT_CONF_OPTS += $(if $(BR2_PACKAGE_IGH_ETHERCAT_E1000E),--enable-e1000e,--disable-e1000e)
-IGH_ETHERCAT_CONF_OPTS += $(if $(BR2_PACKAGE_IGH_ETHERCAT_R8169),--enable-r8169,--disable-r8169)
+	--with-linux-dir=$(LINUX_DIR) \
+	$(if $(BR2_INSTALL_LIBSTDCPP),--enable-tool,--disable-tool) \
+	$(if $(BR2_PACKAGE_IGH_ETHERCAT_8139TOO),--enable-8139too,--disable-8139too) \
+	$(if $(BR2_PACKAGE_IGH_ETHERCAT_E100),--enable-e100,--disable-e100) \
+	$(if $(BR2_PACKAGE_IGH_ETHERCAT_E1000),--enable-e1000,--disable-e1000) \
+	$(if $(BR2_PACKAGE_IGH_ETHERCAT_E1000E),--enable-e1000e,--disable-e1000e) \
+	$(if $(BR2_PACKAGE_IGH_ETHERCAT_R8169),--enable-r8169,--disable-r8169)
 
 $(eval $(kernel-module))
 $(eval $(autotools-package))