bionic: Change the type of soinfo's size to size_t

Some system functions like munmap expect soinfo's size to be size_t, but currently
it is unsigned. Change it to size_t to fit 64bit's portability.

Change-Id: I0bf6d522b38b0cd9bf1db05b004b5326217412a2
Signed-off-by: Weiwu Chen <weiwu.chen@intel.com>
Signed-off-by: Qiming Shi <qiming.shi@intel.com>
diff --git a/linker/linker.cpp b/linker/linker.cpp
index f58e222..9bc9afe 100755
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -783,7 +783,7 @@
 
   // At this point we know that whatever is loaded @ base is a valid ELF
   // shared library whose segments are properly mapped in.
-  TRACE("[ init_library base=%p sz=0x%08x name='%s' ]",
+  TRACE("[ find_library_internal base=%p size=%zu name='%s' ]",
         reinterpret_cast<void*>(si->base), si->size, si->name);
 
   if (!soinfo_link_image(si)) {