x86: move iomap.h to the new include location

a new file was accidentally added to include/asm-x86;
move it to the new arch/x86/include/asm location

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>

diff --git a/include/asm-x86/iomap.h b/arch/x86/include/asm/iomap.h
similarity index 100%
rename from include/asm-x86/iomap.h
rename to arch/x86/include/asm/iomap.h