Enable HAL RTC for RemRamV1 board

Signed-off-by: Frederic.Pillon <frederic.pillon@st.com>

Author: fpistm

variants/REMRAM_V1/stm32f7xx_hal_conf.h

@@ -70,7 +70,7 @@
 /* #define HAL_LTDC_MODULE_ENABLED   */
 /* #define HAL_QSPI_MODULE_ENABLED   */
 /* #define HAL_RNG_MODULE_ENABLED   */
-/* #define HAL_RTC_MODULE_ENABLED   */
+#define HAL_RTC_MODULE_ENABLED
 /* #define HAL_SAI_MODULE_ENABLED   */
 /* #define HAL_SD_MODULE_ENABLED   */
 /* #define HAL_MMC_MODULE_ENABLED   */