rtc: rv8803: Kconfig: Indicate rx8900 support

This driver supports the Epson RX8900, but this was not indicated in
Kconfig.
Signed-off-by: NBenoît Thébaudeau <benoit@wsystem.com>
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>

drivers/rtc/Kconfig

@@ -578,10 +578,10 @@ config RTC_DRV_EM3027
 	  will be called rtc-em3027.
 
 config RTC_DRV_RV8803
-	tristate "Micro Crystal RV8803"
+	tristate "Micro Crystal RV8803, Epson RX8900"
 	help
-	  If you say yes here you get support for the Micro Crystal
-	  RV8803 RTC chips.
+	  If you say yes here you get support for the Micro Crystal RV8803 and
+	  Epson RX8900 RTC chips.
 
 	  This driver can also be built as a module. If so, the module
 	  will be called rtc-rv8803.