mb/google/nissa: Create joxer variant

Create the joxer variant of the nissa reference board by copying
the template files to a new directory named for the variant.

BUG=b:236086879
BRANCH=None
TEST=util/abuild/abuild -p none -t google/brya -x -a
make sure the build includes GOOGLE_JOXER

Signed-off-by: Mark Hsieh <mark_hsieh@wistron.corp-partner.google.com>
Change-Id: I4cb74f90c4ec33818b551d5f51759930e3222677
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65151
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Henry Sun <henrysun@google.com>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Shou-Chieh Hsu <shouchieh@google.com>
diff --git a/src/mainboard/google/brya/Kconfig b/src/mainboard/google/brya/Kconfig
index 3983a30..71479f4 100644
--- a/src/mainboard/google/brya/Kconfig
+++ b/src/mainboard/google/brya/Kconfig
@@ -140,6 +140,7 @@
 	default 0x1 if BOARD_GOOGLE_MITHRAX
 	default 0x1 if BOARD_GOOGLE_KULDAX
 	default 0x3 if BOARD_GOOGLE_SKOLAS4ES
+	default 0x0 if BOARD_GOOGLE_JOXER
 
 config DRIVER_TPM_I2C_ADDR
 	hex
@@ -200,6 +201,7 @@
 	default "Mithrax" if BOARD_GOOGLE_MITHRAX
 	default "Kuldax" if BOARD_GOOGLE_KULDAX
 	default "Skolas4ES" if BOARD_GOOGLE_SKOLAS4ES
+	default "Joxer" if BOARD_GOOGLE_JOXER
 
 config VARIANT_DIR
 	default "brya0" if BOARD_GOOGLE_BRYA0
@@ -233,6 +235,7 @@
 	default "mithrax" if BOARD_GOOGLE_MITHRAX
 	default "kuldax" if BOARD_GOOGLE_KULDAX
 	default "skolas4es" if BOARD_GOOGLE_SKOLAS4ES
+	default "joxer" if BOARD_GOOGLE_JOXER
 
 config VBOOT
 	select VBOOT_EARLY_EC_SYNC if !BOARD_GOOGLE_BASEBOARD_NISSA
@@ -263,7 +266,7 @@
 
 choice
 	prompt "Cache as RAM (CAR) setup configuration to use"
-	default USE_ADL_NEM if BOARD_GOOGLE_BRYA4ES || BOARD_GOOGLE_PRIMUS4ES || BOARD_GOOGLE_GIMBLE4ES || BOARD_GOOGLE_REDRIX4ES || BOARD_GOOGLE_TAEKO4ES || BOARD_GOOGLE_ANAHERA4ES || BOARD_GOOGLE_TANIKS || BOARD_GOOGLE_NIVVIKS || BOARD_GOOGLE_NEREID || BOARD_GOOGLE_CRAASK || BOARD_GOOGLE_SKOLAS4ES
+	default USE_ADL_NEM if BOARD_GOOGLE_BRYA4ES || BOARD_GOOGLE_PRIMUS4ES || BOARD_GOOGLE_GIMBLE4ES || BOARD_GOOGLE_REDRIX4ES || BOARD_GOOGLE_TAEKO4ES || BOARD_GOOGLE_ANAHERA4ES || BOARD_GOOGLE_TANIKS || BOARD_GOOGLE_NIVVIKS || BOARD_GOOGLE_NEREID || BOARD_GOOGLE_CRAASK || BOARD_GOOGLE_SKOLAS4ES || BOARD_GOOGLE_JOXER
 	default USE_ADL_ENEM
 
 config USE_ADL_ENEM