stm32mp1: key: add stm32key command

Add dedicated command to register in fuse a public hash
key provided by keygen tool.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/arch/arm/mach-stm32mp/Makefile b/arch/arm/mach-stm32mp/Makefile
index e59bd81..7745060 100644
--- a/arch/arm/mach-stm32mp/Makefile
+++ b/arch/arm/mach-stm32mp/Makefile
@@ -11,6 +11,7 @@
 obj-y += spl.o
 else
 obj-y += bsec.o
+obj-$(CONFIG_CMD_STM32KEY) += cmd_stm32key.o
 ifndef CONFIG_STM32MP1_TRUSTED
 obj-$(CONFIG_SYSRESET) += cmd_poweroff.o
 endif