RTC: Add support RTC alarms on hosted targets

Only AGPTeck Rocker is enabled for now, and it doesn't work properly:

 * No generic way to determine wakeup reason under Linux
 * No generic way to be asynchronously notified if the alarm is
   triggered when we're already awake
 * Shutting down may clobber RTC wakeup (driver/etc dependent)

And finally:

 * AGPTek kernel's RTC driver has some 24h clock and
   some timezone-related issues.

So, the infrastructure is arguably useful, but the only applicable
hardware I have is pathologically brain-dead.

Change-Id: Iac6a26a9b6e4efec5d0b3030b87f456eb23fc01d

1 files changed, 3 insertions, 0 deletions

diff --git a/firmware/export/config/agptekrocker.h b/firmware/export/config/agptekrocker.h
index 372287f4b5..6b012730c0 100644
--- a/firmware/export/config/agptekrocker.h
+++ b/firmware/export/config/agptekrocker.h
@@ -66,6 +66,9 @@
 /* define this if you have a real-time clock */
 #define CONFIG_RTC APPLICATION
 
+/* Define if the device can wake from an RTC alarm */
+#define HAVE_RTC_ALARM
+
 /* The number of bytes reserved for loadable codecs */
 #define CODEC_SIZE 0x80000