rtc: Kconfig: select REGMAP_I2C when necessary

Some i2c RTC drivers are using regmap but are not selecting REGMAP_I2C
which may lead to build failures.

Link: https://lore.kernel.org/r/20200127221724.10160-2-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index ede36e7a1c7f0e1e0ba93bf2a3e9be1983c9cba9..67860ca8444ba49f390af6e57495a3c3b6dbb002 100644 (file)
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -240,6 +240,7 @@ config RTC_DRV_AS3722
 
 config RTC_DRV_DS1307
        tristate "Dallas/Maxim DS1307/37/38/39/40/41, ST M41T00, EPSON RX-8025, ISL12057"
+       select REGMAP_I2C
        help
          If you say yes here you get support for various compatible RTC
          chips (often with battery backup) connected with I2C. This driver
@@ -621,6 +622,7 @@ config RTC_DRV_RX8010
 
 config RTC_DRV_RX8581
        tristate "Epson RX-8571/RX-8581"
+       select REGMAP_I2C
        help
          If you say yes here you will get support for the Epson RX-8571/
          RX-8581.
@@ -648,6 +650,7 @@ config RTC_DRV_EM3027
 
 config RTC_DRV_RV3028
        tristate "Micro Crystal RV3028"
+       select REGMAP_I2C
        help
          If you say yes here you get support for the Micro Crystal
          RV3028.
@@ -677,6 +680,7 @@ config RTC_DRV_S5M
 
 config RTC_DRV_SD3078
        tristate "ZXW Shenzhen whwave SD3078"
+       select REGMAP_I2C
        help
          If you say yes here you get support for the ZXW Shenzhen whwave
          SD3078 RTC chips.