amd: rename model_fxx_powernow to powernow.

Change-Id: Iee581183f9cd9f5fecd5604536b735f6a04a0f93
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/7019
Tested-by: build bot (Jenkins)
Reviewed-by: Rudolf Marek <r.marek@assembler.cz>

src/include/cpu/amd/powernow.h

@@ -17,9 +17,9 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef MODEL_FXX_POWERNOW_H
-#define MODEL_FXX_POWERNOW_H
+#ifndef POWERNOW_H
+#define POWERNOW_H
 
-int amd_model_fxx_generate_powernow(u32 pcontrol_blk, u8 plen, u8 onlyBSP);
+int amd_generate_powernow(u32 pcontrol_blk, u8 plen, u8 onlyBSP);
 
 #endif