x86: Rename some FSP functions to have an fsp_ prefix

Given these exported function an fsp_ prefix since they are declared in an
fsp.h header.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/cpu/ivybridge/fsp_configs.c b/arch/x86/cpu/ivybridge/fsp_configs.c
index 773c2b2..0e6453c 100644
--- a/arch/x86/cpu/ivybridge/fsp_configs.c
+++ b/arch/x86/cpu/ivybridge/fsp_configs.c
@@ -9,7 +9,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-void update_fsp_configs(struct fsp_config_data *config,
+void fsp_update_configs(struct fsp_config_data *config,
 			struct fspinit_rtbuf *rt_buf)
 {
 	struct platform_config *plat_config = &config->plat_config;