Increase stack size for float mobilenet_v1

The latest upstream change requires more stack size.
Increase stack size to 200K for mobilenet_v1 float model.

Change-Id: I5b7920506666f5694054c822050742aff5f5e8af

samples/float_model/CMakeLists.txt

diff --git a/samples/float_model/CMakeLists.txt b/samples/float_model/CMakeLists.txt
index 216fd9e..b904296 100644
--- a/samples/float_model/CMakeLists.txt
+++ b/samples/float_model/CMakeLists.txt
@@ -81,7 +81,7 @@
     ::mobilenet_input_c
     samples::util::util
   LINKOPTS
-    "LINKER:--defsym=__stack_size__=150k"
+    "LINKER:--defsym=__stack_size__=200k"
 )
 
 iree_cc_binary(