chromeos/gnvs: remove function and naming cleanup

- Remove unused acpi_get_chromeos_acpi_info (see CB:28190)
- Make function naming in gnvs.h consistent (start with "chromeos_")

BUG=b:112288216
TEST=compile and run on eve

Change-Id: I5b0066bc311b0ea995fa30bca1cd9235dc9b7d1b
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://review.coreboot.org/28406
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/southbridge/intel/bd82x6x/lpc.c

@@ -739,7 +739,7 @@ static void southbridge_inject_dsdt(struct device *dev)
 		memcpy(gnvs->did, gfx->did, sizeof(gnvs->did));
 
 #if IS_ENABLED(CONFIG_CHROMEOS)
-		chromeos_init_vboot(&(gnvs->chromeos));
+		chromeos_init_chromeos_acpi(&(gnvs->chromeos));
 #endif
 
 		/* And tell SMI about it */

src/southbridge/intel/lynxpoint/lpc.c

@@ -770,7 +770,7 @@ static void southbridge_inject_dsdt(struct device *dev)
 		gnvs->pcnt = dev_count_cpu();
 
 #if IS_ENABLED(CONFIG_CHROMEOS)
-		chromeos_init_vboot(&(gnvs->chromeos));
+		chromeos_init_chromeos_acpi(&(gnvs->chromeos));
 #endif
 
 		/* Update the mem console pointer. */