Trim .acpi_fill_ssdt_generator and .acpi_inject_dsdt_generator

These two identifiers were always very confusing. We're not filling and
injecting generators. We are filling SSDTs and injecting into the DSDT.
So drop the `_generator` suffix. Hopefully, this also makes ACPI look a
little less scary.

Change-Id: I6f0e79632c9c855f38fe24c0186388a25990c44d
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39977
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: David Guckian
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/device/pci_device.c

@@ -768,7 +768,7 @@ struct device_operations default_pci_ops_dev = {
 	.enable_resources = pci_dev_enable_resources,
 #if CONFIG(HAVE_ACPI_TABLES)
 	.write_acpi_tables = pci_rom_write_acpi_tables,
-	.acpi_fill_ssdt_generator = pci_rom_ssdt,
+	.acpi_fill_ssdt    = pci_rom_ssdt,
 #endif
 	.init             = pci_dev_init,
 	.scan_bus         = 0,