fsp platfoms: add prototype & consolidate main entry-point

- In '-ffreestanding' main() is just as any other function and so
it needs a type-signature. Fixes a clang warning.

- Bay Trail and Rangeley have the updated romstage.c with the code
moved into the chipset, put the prototype in romstage.c.

- The sandybridge code has not been updated, so the prototype
for it goes into chipset_fsp_util.h, next to the prototype for
romstage_main_continue.

- Correct the return value of baytrail main() from void * to void
and remove the unnecessary asmlinkage tag. I'm surprised that this
didn't generate a warning...

Change-Id: I85ac0797d1e55d2b7ffdca039a52820d7827e704
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/7724
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/src/mainboard/intel/cougar_canyon2/romstage.c b/src/mainboard/intel/cougar_canyon2/romstage.c
index c90ece2e56..6b4c1195fe 100644
--- a/src/mainboard/intel/cougar_canyon2/romstage.c
+++ b/src/mainboard/intel/cougar_canyon2/romstage.c
@@ -172,7 +172,6 @@ static void rcba_config(void)
 	RCBA32(FD) = reg32;
 }
 
-void main(FSP_INFO_HEADER *fsp_info_header); // XXX find a better place dorothy
 void main(FSP_INFO_HEADER *fsp_info_header)
 {
 #if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME)