drivers: bbram: Update Kconfig

* Utilize DT_HAS_<COMPAT>_ENABLED for devicetree based drivers

Signed-off-by: Kumar Gala <galak@kernel.org>
diff --git a/drivers/bbram/Kconfig.bbram_emul b/drivers/bbram/Kconfig.bbram_emul
index 9fe7bc4..afc8cb1 100644
--- a/drivers/bbram/Kconfig.bbram_emul
+++ b/drivers/bbram/Kconfig.bbram_emul
@@ -1,10 +1,9 @@
 # Copyright (c) 2021 Google Inc
 # SPDX-License-Identifier: Apache-2.0
 
-DT_COMPAT_ST_BBRAM_EMUL := zephyr,bbram-emul
-
 config BBRAM_EMUL
 	bool "Battery-backed RAM emulated drivers"
-	default $(dt_compat_enabled,${DT_COMPAT_ST_BBRAM_EMUL})
+	default y
+	depends on DT_HAS_ZEPHYR_BBRAM_EMUL_ENABLED
 	help
 	  This option enables the BBRAM emulation driver.
diff --git a/drivers/bbram/Kconfig.it8xxx2 b/drivers/bbram/Kconfig.it8xxx2
index 9f8cf60..a3af7e9 100644
--- a/drivers/bbram/Kconfig.it8xxx2
+++ b/drivers/bbram/Kconfig.it8xxx2
@@ -1,12 +1,10 @@
 # Copyright (c) 2021 Google Inc
 # SPDX-License-Identifier: Apache-2.0
 
-DT_COMPAT_ITE_IT8XXX2_BBRAM := ite,it8xxx2-bbram
-
 config BBRAM_IT8XXX2
 	bool "ITE IT81202 Battery-backed RAM drivers"
-	depends on SOC_FAMILY_RISCV_ITE
-	default $(dt_compat_enabled,$(DT_COMPAT_ITE_IT8XXX2_BBRAM))
+	default y
+	depends on DT_HAS_ITE_IT8XXX2_BBRAM_ENABLED
 	help
 	  This option enables the BBRAM driver for RISCV_ITE family of
 	  processors.
diff --git a/drivers/bbram/Kconfig.npcx b/drivers/bbram/Kconfig.npcx
index cd39f1c..4b5cc13 100644
--- a/drivers/bbram/Kconfig.npcx
+++ b/drivers/bbram/Kconfig.npcx
@@ -1,11 +1,9 @@
 # Copyright (c) 2021 Google Inc
 # SPDX-License-Identifier: Apache-2.0
 
-DT_COMPAT_ST_BBRAM_NPCX := nuvoton,npcx-bbram
-
 config BBRAM_NPCX
 	bool "Nuvoton NPCX embedded controller (EC) Battery-backed RAM drivers"
-	depends on SOC_FAMILY_NPCX
-	default $(dt_compat_enabled,${DT_COMPAT_ST_BBRAM_NPCX})
+	default y
+	depends on DT_HAS_NUVOTON_NPCX_BBRAM_ENABLED
 	help
 	  This option enables the BBRAM driver for NPCX family of processors.
diff --git a/drivers/bbram/Kconfig.xec b/drivers/bbram/Kconfig.xec
index d715a85..97a64da 100644
--- a/drivers/bbram/Kconfig.xec
+++ b/drivers/bbram/Kconfig.xec
@@ -2,12 +2,10 @@
 # Copyright (c) 2022 Microchip Technology Inc.
 # SPDX-License-Identifier: Apache-2.0
 
-DT_COMPAT_ST_BBRAM_XEC := microchip,xec-bbram
-
 config BBRAM_XEC
 	bool "Microchip XEC Battery-backed RAM drivers"
-	depends on SOC_FAMILY_MEC
-	default $(dt_compat_enabled,$(DT_COMPAT_ST_BBRAM_XEC))
+	default y
+	depends on DT_HAS_MICROCHIP_XEC_BBRAM_ENABLED
 	help
 	  This option enables the BBRAM driver for Microchip XEC family of
 	  processors.