Fix off-by-one errors

Fixed identical off-by-one errors in blockdevice read function and in
linux posix file driver.

openrtx/src/core/nvmem_access.c

@@ -37,7 +37,7 @@
 static inline bool checkBounds(const struct nvmArea *area, uint32_t addr, size_t len)
 {
     return (addr >= area->startAddr)
-        && ((addr + len) < (area->startAddr + area->size));
+        && ((addr + len) <= (area->startAddr + area->size));
 }
 
 

platform/drivers/NVM/posix_file.c

@@ -87,7 +87,7 @@ static int nvm_api_read(const struct nvmDevice *dev, uint32_t offset,
     if(fd < 0)
         return -EBADF;
 
-    if((offset + len) >= cfg->fileSize)
+    if((offset + len) > cfg->fileSize)
         return -EINVAL;
 
     lseek(fd, offset, SEEK_SET);