tests/run-tests.py: Update the list of tests requiring floats.

This commit updates the list of the tests that must be skipped when the
suite is executed on a target that does not have floating point
support.

Two more tests, namely `extmod/vfs_rom.py` and
`micropython/const_float.py` have been added to the list, since they
both rely on floating point support being there.

Signed-off-by: Alessandro Gatti <a.gatti@frob.it>

Author: agatti

tests/run-tests.py

@@ -240,6 +240,8 @@
     "extmod/uctypes_le_float.py",
     "extmod/uctypes_native_float.py",
     "extmod/uctypes_sizeof_float.py",
+    "extmod/vfs_rom.py",
+    "micropython/const_float.py",
     "misc/rge_sm.py",
     "ports/unix/ffi_float.py",
     "ports/unix/ffi_float2.py",