ipa: Drop period at end of \brief or \param

A few periods crept in at the end of Doxygen \brief or \param statements
in the src/ipa/ directory. Remove them all in one go.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

src/ipa/libipa/histogram.cpp

@@ -53,7 +53,7 @@ Histogram::Histogram(Span<const uint32_t> data)
  */
 
 /**
- * \brief Cumulative frequency up to a (fractional) point in a bin.
+ * \brief Cumulative frequency up to a (fractional) point in a bin
  * \param[in] bin The bin up to which to cumulate
  *
  * With F(p) the cumulative frequency of the histogram, the value is 0 at