packages: rename FOO_CONF_OPT into FOO_CONF_OPTS

To be consistent with the recent change of FOO_MAKE_OPT into FOO_MAKE_OPTS,
make the same change for FOO_CONF_OPT.

Sed command used:
   find * -type f | xargs sed -i 's#_CONF_OPT\>#&S#g'

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

boot/boot-wrapper-aarch64/boot-wrapper-aarch64.mk

@@ -26,7 +26,7 @@ endef
 
 BOOT_WRAPPER_AARCH64_PRE_PATCH_HOOKS += BOOT_WRAPPER_AARCH64_FIX_DTB_NAME
 
-BOOT_WRAPPER_AARCH64_CONF_OPT = \
+BOOT_WRAPPER_AARCH64_CONF_OPTS = \
 	--with-kernel-dir=$(LINUX_DIR) \
 	--with-cmdline=$(BR2_TARGET_BOOT_WRAPPER_AARCH64_BOOTARGS)
 

boot/grub/grub.mk

@@ -75,7 +75,7 @@ GRUB_CONF_ENV = \
 	$(HOST_CONFIGURE_OPTS) \
 	CFLAGS="$(HOST_CFLAGS) $(GRUB_CFLAGS) -m32"
 
-GRUB_CONF_OPT = \
+GRUB_CONF_OPTS = \
 	--disable-auto-linux-mem-opt \
 	$(GRUB_CONFIG-y)
 

boot/grub2/grub2.mk

@@ -50,7 +50,7 @@ GRUB2_CONF_ENV = \
 	TARGET_CFLAGS="$(TARGET_CFLAGS)" \
 	TARGET_CPPFLAGS="$(TARGET_CPPFLAGS)"
 
-GRUB2_CONF_OPT = \
+GRUB2_CONF_OPTS = \
 	--target=$(GRUB2_TARGET) \
 	--with-platform=$(GRUB2_PLATFORM) \
 	--disable-grub-mkfont \

boot/gummiboot/gummiboot.mk

@@ -21,7 +21,7 @@ else ifeq ($(BR2_x86_64),y)
 GUMMIBOOT_IMGARCH = x64
 endif
 
-GUMMIBOOT_CONF_OPT = \
+GUMMIBOOT_CONF_OPTS = \
 	--host=$(BR2_ARCH) \
 	--with-efi-libdir=$(STAGING_DIR)/usr/lib \
 	--with-efi-ldsdir=$(STAGING_DIR)/usr/lib \