Fix the Calient wavelength range

1260 nm seems to be the minimum of the O-band rather than maximum.

Change-Id: I9a1d0471bd2f65d964fa822e7d1e7e85376dabbc
diff --git a/drivers/optical/src/main/java/org/onosproject/driver/optical/query/CalientLambdaQuery.java b/drivers/optical/src/main/java/org/onosproject/driver/optical/query/CalientLambdaQuery.java
index bcc5982..c715c98 100644
--- a/drivers/optical/src/main/java/org/onosproject/driver/optical/query/CalientLambdaQuery.java
+++ b/drivers/optical/src/main/java/org/onosproject/driver/optical/query/CalientLambdaQuery.java
@@ -41,7 +41,7 @@
         // Wavelength range: 1260 - 1630 nm
         long startSpacingMultiplier = Spectrum.U_BAND_MIN.subtract(Spectrum.CENTER_FREQUENCY).asHz() /
                 ChannelSpacing.CHL_12P5GHZ.frequency().asHz();
-        long stopSpacingMultiplier = Spectrum.O_BAND_MAX.subtract(Spectrum.CENTER_FREQUENCY).asHz() /
+        long stopSpacingMultiplier = Spectrum.O_BAND_MIN.subtract(Spectrum.CENTER_FREQUENCY).asHz() /
                 ChannelSpacing.CHL_12P5GHZ.frequency().asHz();
 
         // Only consider odd values for the multiplier (for easy mapping to fixed grid)