Release: Set PKG_CONFIG_PATH as argument to ./configure

In OpenOCD both configure and configure.ac come from Git, hence may have
same timestamp and as a result, makefile might try to regenerate configure.
This might fail when cross building for Windows, because PKG_CONFIG_PATH
shall be set properly to specify path to libusb-1.0 built for Windows hosts.
But in this second run it is not set, hence reconfiguration fails. The
solution is that this variable should be set not as an envvar to
./configure, but as an argument to it, thus it would be logged and set
properly on the reconfigure runs. Hence, this:

	PKG_CONFIG_PATH=... ./configure

is replaced with this:

	./configure PKG_CONFIG_PATH=...

Signed-off-by: Anton Kolesov <[email protected]>

Author: anthony-kolesov

release.mk

@@ -767,10 +767,10 @@ $(OOCD_BUILD_DIR_LINUX)/Makefile: | $(OOCD_BUILD_DIR_LINUX)
 
 $(OOCD_BUILD_DIR_LINUX)/Makefile:
 	cd $(OOCD_BUILD_DIR_LINUX) && \
-		PKG_CONFIG_PATH=$(abspath $(BUILD_DIR)/libusb_linux_install)/lib/pkgconfig \
 		$(OOCD_SRC_DIR)/configure \
 	    --enable-ftdi --disable-werror \
 	    --disable-libusb0 \
+	    PKG_CONFIG_PATH=$(abspath $(BUILD_DIR)/libusb_linux_install)/lib/pkgconfig \
 	    PKG_CONFIG=pkg-config \
 	    --prefix=$(abspath $O/$(OOCD_DIR_LINUX))