LF-63-2 ARM: imx_v6_v7_defconfig: build SM test as module

SM test driver was changed to build only as a module.
Update defconfig accordingly.

Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Acked-by: Leonard Crestez <leonard.crestez@nxp.com>

arch/arm/configs/imx_v6_v7_defconfig

@@ -547,7 +547,7 @@ CONFIG_CRYPTO_SERPENT=m
 CONFIG_CRYPTO_TWOFISH=m
 CONFIG_CRYPTO_DEV_FSL_CAAM=y
 CONFIG_CRYPTO_DEV_FSL_CAAM_SM=y
-CONFIG_CRYPTO_DEV_FSL_CAAM_SM_TEST=y
+CONFIG_CRYPTO_DEV_FSL_CAAM_SM_TEST=m
 CONFIG_CRYPTO_DEV_FSL_CAAM_SECVIO=y
 CONFIG_CRYPTO_DEV_SAHARA=y
 CONFIG_CRYPTO_DEV_MXS_DCP=y