Instead of compiling the function and using the result as a constant, simply use
the constant.
NOTE: This patch works around bug:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52546
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Tom Rini <trini@ti.com>