[media] c8sectpfe: Allow compiling it with COMPILE_TEST

While it won't work, it is good to allow it to build with
COMPILE_TEST, as we can check if other patches would break
compilation for this driver.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/platform/sti/c8sectpfe/Kconfig

 config DVB_C8SECTPFE
 	tristate "STMicroelectronics C8SECTPFE DVB support"
-	depends on DVB_CORE && I2C && (ARCH_STI || ARCH_MULTIPLATFORM)
+	depends on DVB_CORE && I2C && (ARCH_STI || ARCH_MULTIPLATFORM || COMPILE_TEST)
 	select LIBELF_32
 	select FW_LOADER
 	select FW_LOADER_USER_HELPER_FALLBACK