stm32mp1: syscon: remove stgen

Reduce difference with kernel Linux device tree.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/arch/arm/mach-stm32mp/include/mach/stm32.h b/arch/arm/mach-stm32mp/include/mach/stm32.h
index 1e3299a..1d4b548 100644
--- a/arch/arm/mach-stm32mp/include/mach/stm32.h
+++ b/arch/arm/mach-stm32mp/include/mach/stm32.h
@@ -15,6 +15,7 @@
 #define STM32_DBGMCU_BASE		0x50081000
 #define STM32_TZC_BASE			0x5C006000
 #define STM32_ETZPC_BASE		0x5C007000
+#define STM32_STGEN_BASE		0x5C008000
 #define STM32_TAMP_BASE			0x5C00A000
 
 #define STM32_USART1_BASE		0x5C000000
@@ -37,7 +38,6 @@
 enum {
 	STM32MP_SYSCON_UNKNOWN,
 	STM32MP_SYSCON_PWR,
-	STM32MP_SYSCON_STGEN,
 	STM32MP_SYSCON_SYSCFG,
 };
 
diff --git a/arch/arm/mach-stm32mp/syscon.c b/arch/arm/mach-stm32mp/syscon.c
index e10c42e..6070837 100644
--- a/arch/arm/mach-stm32mp/syscon.c
+++ b/arch/arm/mach-stm32mp/syscon.c
@@ -10,7 +10,6 @@
 
 static const struct udevice_id stm32mp_syscon_ids[] = {
 	{ .compatible = "st,stm32mp1-pwr", .data = STM32MP_SYSCON_PWR },
-	{ .compatible = "st,stm32-stgen", .data = STM32MP_SYSCON_STGEN },
 	{ .compatible = "st,stm32mp157-syscfg",
 	  .data = STM32MP_SYSCON_SYSCFG },
 	{ }