uhd: Add version 3.9.0 support

New functionality includes B200-mini device support and updated
timing values to match FPGA changes.

Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
diff --git a/configure.ac b/configure.ac
index 0a64dee..0e35e36 100644
--- a/configure.ac
+++ b/configure.ac
@@ -97,8 +97,11 @@
 ])
 
 AS_IF([test "x$with_usrp1" != "xyes"],[
-    PKG_CHECK_MODULES(UHD, uhd >= 003.004.000)
-    AC_DEFINE(USE_UHD, 1, Define to 1 if using UHD)
+    PKG_CHECK_MODULES(UHD, uhd >= 003.009,
+        [AC_DEFINE(USE_UHD_3_9, 1, UHD version 3.9.0 or higher)],
+        [PKG_CHECK_MODULES(UHD, uhd >= 003.004.000)]
+    )
+    AC_DEFINE(USE_UHD, 1, All UHD versions)
 ])
 
 AS_IF([test "x$with_singledb" = "xyes"], [