google/kahlee: Remove unneeded HAVE_ACPI_RESUME guard

We leave it to linker garbage collection to drop
unreferenced code and symbols from final object files.
Function declarations and definitions are to be guarded
with preprocessor directives only as a last resort.

Change-Id: Ie8748ccddc8e31569c58deba5d08c98a04326fa8
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31317
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/mainboard/google/kahlee/mainboard.c

@@ -195,12 +195,10 @@ int mainboard_get_ehci_oc_map(uint16_t *map)
 	return variant_get_ehci_oc_map(map);
 }
 
-#if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME)
 void mainboard_suspend_resume(void)
 {
 	variant_mainboard_suspend_resume();
 }
-#endif
 
 struct chip_operations mainboard_ops = {
 	.init = mainboard_init,
@@ -214,11 +212,9 @@ uint8_t __weak variant_board_sku(void)
 	return 0;
 }
 
-#if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME)
 void __weak variant_mainboard_suspend_resume(void)
 {
 }
-#endif
 
 const char *smbios_mainboard_sku(void)
 {

src/mainboard/google/kahlee/variants/baseboard/include/baseboard/variants.h

@@ -31,8 +31,6 @@ const struct soc_amd_gpio *variant_early_gpio_table(size_t *size);
 const struct soc_amd_gpio *variant_romstage_gpio_table(size_t *size);
 const struct soc_amd_gpio *variant_gpio_table(size_t *size);
 void variant_romstage_entry(int s3_resume);
-#if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME)
 void variant_mainboard_suspend_resume(void);
-#endif
 
 #endif /* __BASEBOARD_VARIANTS_H__ */

src/mainboard/google/kahlee/variants/baseboard/mainboard.c

@@ -32,13 +32,11 @@ uint8_t variant_board_sku(void)
 	return sku;
 }
 
-#if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME)
 void variant_mainboard_suspend_resume(void)
 {
 	/* Enable backlight - GPIO 133 active low */
 	gpio_set(GPIO_133, 0);
 }
-#endif
 
 void board_bh720(struct device *dev)
 {