Compiler warning on RTEMS

[jphickey]

Describe the bug
When compiling on RTEMS this application now has multiple warnings:

/home/joe/code/cfecfs/github/apps/sample_app/fsw/src/sample_app.c: In function 'SAMPLE_AppInit':
/home/joe/code/cfecfs/github/apps/sample_app/fsw/src/sample_app.c:166:30: error: format '%X' expects argument of type 'unsigned int', but argument 2 has type 'int32' [-Werror=format=]
                              status);
                              ^
/home/joe/code/cfecfs/github/apps/sample_app/fsw/src/sample_app.c:187:30: error: format '%X' expects argument of type 'unsigned int', but argument 2 has type 'int32' [-Werror=format=]
                              status);
                              ^
/home/joe/code/cfecfs/github/apps/sample_app/fsw/src/sample_app.c:199:30: error: format '%X' expects argument of type 'unsigned int', but argument 2 has type 'int32' [-Werror=format=]
                              status);
                              ^
/home/joe/code/cfecfs/github/apps/sample_app/fsw/src/sample_app.c:211:30: error: format '%X' expects argument of type 'unsigned int', but argument 2 has type 'int32' [-Werror=format=]
                              status);
                              ^
/home/joe/code/cfecfs/github/apps/sample_app/fsw/src/sample_app.c:226:9: error: format '%X' expects argument of type 'unsigned int', but argument 2 has type 'int32' [-Werror=format=]
         CFE_ES_WriteToSysLog("Sample App: Error Registering \
         ^
/home/joe/code/cfecfs/github/apps/sample_app/fsw/src/sample_app.c: In function 'SAMPLE_GetCrc':
/home/joe/code/cfecfs/github/apps/sample_app/fsw/src/sample_app.c:535:9: error: format '%X' expects argument of type 'unsigned int', but argument 2 has type 'uint32' [-Werror=format=]
         CFE_ES_WriteToSysLog("Sample App: CRC: 0x%08X\n\n", Crc);
         ^

To Reproduce
Build on RTEMS per the readme/howto and with -Wall -Werror switches

Expected behavior
Should build clean

System observed on:
Ubuntu 18.04 (build host) when cross compiling for RTEMS 4.11

Additional context
Appears the problem calls were introduced in #1

As a rule of thumb, whenever "printf" style conversions are used in conjunction with the fixed-width types (int32, uint32, etc) these need an explicit cast because the actual type definitions vary by platform.

Reporter Info
Joseph Hickey, Vantage Systems, Inc.