feat(sdk): Update changelog (0.2.1-11)

lib/sdk/changes.txt

+###### Changes in version 0.2.1-10 #############################################
+* Renamed IRQ number 0x65 from RPU_IRQHandler to SCA_IRQHandler.
+* Changed some low-level register names and fields to match the User Guide.
+* Fixed incorrect RPU base address.
+
+###### Changes in version 0.2.1-9 #############################################
+* Adding Bootloader application and BLE file transfer to BLE_datc/BLE_dats.
+* Enabling PHY switching with SDMA.
+* Separating SDMA code and data sections into dedicated SRAM instances.
+* Adding Backup mode option to BLE_fit_ds example.
+* Adding PER reporing to BLE_datc when WSF_TRACE_ENABLED is defined. 
+* Adding QSPI and SPI_DMA examples, enhancing SPI example.
+* Enhancing USB_CompositeDevice_CDCACM example.
+
+###### Changes in version 0.2.1-8 #############################################
+* Fixing warning with FreeRTOS example. Prevening build with -mfloat-abi=soft 
+* Allowing for BLE Libraries to be built with -mfloat-abi=hard/soft/softfp
+* Fixing bug with BLE Encryption disable
+* Using default definition of 1 ms for WSF_MS_PER_TICK
+
 ###### Changes in version 0.2.1-7 #############################################
 * Improved USB_CompositeDevice example to support high speed USB.
 * Added function to enter background mode to lp.c/h.
@@ -149,4 +169,4 @@
   function names.
 
 ###### Changes in version 0.1.0-2 #############################################
-* Initial release
\ No newline at end of file
+* Initial release