fix issue with IAR Assembler in freertos build

demos/host/host_freertos/host_freertos.uvopt

@@ -606,10 +606,10 @@
       <FileType>1</FileType>
       <tvExp>0</tvExp>
       <Focus>0</Focus>
-      <ColumnNumber>18</ColumnNumber>
+      <ColumnNumber>0</ColumnNumber>
       <tvExpOptDlg>0</tvExpOptDlg>
-      <TopLine>101</TopLine>
-      <CurrentLine>118</CurrentLine>
+      <TopLine>111</TopLine>
+      <CurrentLine>113</CurrentLine>
       <bDave2>0</bDave2>
       <PathWithFileName>..\src\main.c</PathWithFileName>
       <FilenameWithoutPath>main.c</FilenameWithoutPath>

vendor/freertos/FreeRTOSConfig.h

@@ -79,11 +79,11 @@
 //--------------------------------------------------------------------+
 // Interrupt nesting behaviour configuration.
 //--------------------------------------------------------------------+
-/* Cortex-M specific definitions. */
+/* Cortex-M specific definitions. __NVIC_PRIO_BITS is defined in core_cmx.h */
 #ifdef __NVIC_PRIO_BITS
 	#define configPRIO_BITS       __NVIC_PRIO_BITS
 #else
-	#define configPRIO_BITS       5        /* 32 priority levels */
+	#define configPRIO_BITS       5        // 32 priority levels FIXME IAR Assembler will wrongly get this default value
 #endif
 
 /* The lowest interrupt priority that can be used in a call to a "set priority"
@@ -107,6 +107,8 @@ See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 //--------------------------------------------------------------------+
 // portmacro.h include path
 //--------------------------------------------------------------------+
+#ifndef __IASMARM__ // avoid messing up with IAR
+
 #if defined __CC_ARM
   #define TOOL_DIR  RVDS
 #elif defined __GNUC__
@@ -129,4 +131,6 @@ See http://www.FreeRTOS.org/RTOS-Cortex-M3-M4.html. */
 
 #include XSTRING_(freertos/Source/portable/TOOL_DIR/ARCH_DIR/portmacro.h)
 
+#endif
+
 #endif /* __FREERTOS_CONFIG__H */