Update features pages after LE Host Support change

After "Write LE Host Support" command is sent, the number of supported features
pages increases. Make sure we have the correct number of pages because it will
be read later.

Change-Id: I23d57b2cc9e773e14b2ce30ccfa624ba433b191c
Signed-off-by: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
Signed-off-by: Zhiquan Liu <zhiquan.liu@intel.com>