Minor documentation update

configs/stm32ldiscovery/README.txt

@@ -21,6 +21,7 @@ README
 Contents
 ========
 
+  - Status
   - GPIO Pin Usage
   - Development Environment
   - GNU Toolchain Options
@@ -34,6 +35,37 @@ Contents
   - STM32L-Discovery-specific Configuration Options
   - Configurations
 
+Status
+======
+
+  The basic port is complete.  A NuttShell (NSH) configuration exists for the
+  STM32L-Discovery board.  A driver has been developed for the segment LCD on
+  board the STM32L-Discovery.  In the NSH configuration discription below,
+  there is information about how the basic NSH extension can be extended to
+  use apps/examples/slcd to exercise the segment LCD.
+
+  * The following subsystem have header files, drivers and have been
+    exercised: PWR, RCC, GPIO, SYSCFG, LCD, USART.
+
+  * The following subsystenms have header files and ported drivers, but are
+    untested:  DMA
+
+  * The following subystems have counterparts with other STM32 parts, but
+    have not been ported or verified:  ADC, DAC, TIM2-15, TIM9-11, RTC,
+    IWDG, WWDG, I2C, SPI, DBG.  These may be close to functional depending
+    upon how close the IP is on the STM32L15X.
+
+    This might include also USB, FSMC, and SDIO.
+
+  * The following subsystems are unique to the STM32L and have not been
+    developed: COMP, TSIO, RI, OPAMP
+
+  * The STM32L15X does support USB, however, USB is not available on the
+    STM32L-Discovery board.
+
+  * These subystems are available on other STM32L15x/16x parts, but not on
+    the part used in the STM32L-Discovery board: CRC, AES, FSMC, SDIO
+
 GPIO Pin Usage
 ==============