mb/google: Move ECFW_RW setting for non-ChromeEC boards

The boolean is stored in ChromeOS NVS, not GNVS.

Change-Id: I5c424a052d484228a456f8f0ad4fb0bed3165e09
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50877
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/vendorcode/google/chromeos/gnvs.c

@@ -76,7 +76,7 @@ void chromeos_set_ramoops(void *ram_oops, size_t size)
 	chromeos_acpi->ramoops_len = size;
 }
 
-void gnvs_set_ecfw_rw(void)
+void chromeos_set_ecfw_rw(void)
 {
 	if (!chromeos_acpi)
 		return;