ARM: imx_v6_v7_defconfig: Select CONFIG_NVMEM_SNVS_LPGPR

The SNVS LPGPR hardware is present on several i.MX SoCs.

Select its driver by default.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/configs/imx_v6_v7_defconfig

@@ -406,6 +406,7 @@ CONFIG_PWM_IMX27=y
 CONFIG_PWM_IMX_TPM=y
 CONFIG_NVMEM_IMX_OCOTP=y
 CONFIG_NVMEM_VF610_OCOTP=y
+CONFIG_NVMEM_SNVS_LPGPR=y
 CONFIG_TEE=y
 CONFIG_OPTEE=y
 CONFIG_MUX_MMIO=y