[pnm] Remove userptr_t from PNM image parsing

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/include/ipxe/pixbuf.h

@@ -22,6 +22,8 @@ struct pixel_buffer {
 	unsigned int height;
 	/** 32-bit (8:8:8:8) xRGB pixel data, in host-endian order */
 	uint32_t *data;
+	/** Total number of pixels */
+	unsigned int pixels;
 	/** Total length */
 	size_t len;
 };

src/include/ipxe/pnm.h

@@ -10,7 +10,6 @@
 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
 
 #include <stdint.h>
-#include <ipxe/uaccess.h>
 #include <ipxe/image.h>
 
 /** PNM signature */