bootm: test: Move test into boot

This test doesn't belong at the top level. Move it into the boot/
directory, to match its implementation.

This test is currently dependent on bloblist, but the real dependency is
on sandbox, so update that.

Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Rini <trini@konsulko.com> # rpi_3, rpi_4, rpi_arm64, am64x_evm_a53, am64-sk
diff --git a/test/Makefile b/test/Makefile
index 48d8bc9..4366e49 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -4,9 +4,6 @@
 
 obj-y += test-main.o
 
-ifneq ($(CONFIG_$(XPL_)BLOBLIST),)
-obj-$(CONFIG_$(XPL_)CMDLINE) += bootm.o
-endif
 obj-$(CONFIG_$(XPL_)CMDLINE) += cmd/
 obj-$(CONFIG_$(XPL_)CMDLINE) += cmd_ut.o
 obj-y += dm/
diff --git a/test/boot/Makefile b/test/boot/Makefile
index d8eded2..63487e8 100644
--- a/test/boot/Makefile
+++ b/test/boot/Makefile
@@ -10,6 +10,9 @@
 obj-$(CONFIG_CEDIT) += cedit.o
 endif
 
+ifdef CONFIG_SANDBOX
+obj-$(CONFIG_$(XPL_)CMDLINE) += bootm.o
+endif
 obj-$(CONFIG_MEASURED_BOOT) += measurement.o
 
 ifdef CONFIG_OF_LIVE
diff --git a/test/bootm.c b/test/boot/bootm.c
similarity index 100%
rename from test/bootm.c
rename to test/boot/bootm.c