meta-variscite-fslc: Update to latest

Summary:
    * Switch to R8.7_SP2-RC0 firmware release for WL18xx Wi-Fi chips.
      This firmware fixes critical powerup sequence bug observer on 5% of WL18xx units.
    * Fix tcf-agent stop delay. The bug caused significant delay during reboot.

default.xml

@@ -24,6 +24,6 @@
   <project remote="freescale" revision="dd482aeb7913c099c69f82362776bd92b584553c" upstream="morty" name="meta-freescale-distro" path="sources/meta-freescale-distro"/>
   <project remote="QT5" revision="3601fd2c5306ac6d5d0d536e0be8cbb90da9b4c1" upstream="morty" name="meta-qt5" path="sources/meta-qt5"/>
   <project remote="OSSystems" revision="7d37ae2adec5cc5ea27367ce125bc7bce2310ca1" upstream="morty" name="meta-browser" path="sources/meta-browser"/>
-  <project remote="variscite" revision="a3308b236370fc74de8c127b6563c6b808c2a411" upstream="morty" name="meta-variscite-fslc" path="sources/meta-variscite-fslc"  />
+  <project remote="variscite" revision="e94fb345c42e8976677dfcac255a77d785eea463" upstream="morty" name="meta-variscite-fslc" path="sources/meta-variscite-fslc"  />
 
 </manifest>