mb/google/brya/var/agah: Select PCIEXP_SUPPORT_RESIZABLE_BARS

The google/agah variant will use a peripheral that will require the use
of the PCIe Resizable BAR feature from the PCIe spec. Thus, select
the new Kconfig option to enable it. The appropriate Resizable BAR size
will be updated later.

BUG=b:214443809
TEST=build

Change-Id: I9cf86ba3160ae5018655b5d366e89f4273b30b94
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61217
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
diff --git a/src/mainboard/google/brya/Kconfig.name b/src/mainboard/google/brya/Kconfig.name
index c2f6190..f6fb23a 100644
--- a/src/mainboard/google/brya/Kconfig.name
+++ b/src/mainboard/google/brya/Kconfig.name
@@ -3,10 +3,11 @@
 config BOARD_GOOGLE_AGAH
 	bool "->  Agah"
 	select BOARD_GOOGLE_BASEBOARD_BRYA
+	select DRIVERS_I2C_MAX98390
+	select PCIEXP_SUPPORT_RESIZABLE_BARS
 	select RT8168_GEN_ACPI_POWER_RESOURCE
 	select RT8168_GET_MAC_FROM_VPD
 	select RT8168_SET_LED_MODE
-	select DRIVERS_I2C_MAX98390
 
 config BOARD_GOOGLE_ANAHERA
 	bool "->  Anahera"