LibreOfficeKit wants the tile pixmap bytes to be in BGRA order in memory

To get that with CoreGraphics on iOS we need to use also
kCGImageByteOrder32Little in the CGBitmapContextCreate() call,
otherwise the bytes will be in ARGB order in memory.

(Not touching the macOS code here.)

Change-Id: I3c2dd94feb1c6bf46c5b335f5901b29e5fe1e7fb

ios/UnitTest/UnitTest/ViewController.mm

@@ -43,7 +43,7 @@ static unsigned char *lo_ios_app_get_cgcontext_for_buffer(unsigned char *buffer,
 {
     assert(cgc == nullptr);
 
-    cgc = CGBitmapContextCreate(buffer, width, height, 8, width*4, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaNoneSkipFirst);
+    cgc = CGBitmapContextCreate(buffer, width, height, 8, width*4, CGColorSpaceCreateDeviceRGB(), kCGImageAlphaNoneSkipFirst | kCGImageByteOrder32Little);
 
     CGContextTranslateCTM(cgc, 0, height);
     CGContextScaleCTM(cgc, 1, -1);

vcl/quartz/salvd.cxx

@@ -304,7 +304,7 @@ bool AquaSalVirtualDevice::SetSize( long nDX, long nDY )
         }
 #endif
         mxBitmapContext = CGBitmapContextCreate( pRawData, nDX, nDY,
-                                                 8, nBytesPerRow, GetSalData()->mxRGBSpace, kCGImageAlphaNoneSkipFirst );
+                                                 8, nBytesPerRow, GetSalData()->mxRGBSpace, kCGImageAlphaNoneSkipFirst | kCGImageByteOrder32Little );
         SAL_INFO( "vcl.cg",  "CGBitmapContextCreate(" << nDX << "x" << nDY << "x32) = " << mxBitmapContext );
         xCGContext = mxBitmapContext;
 #endif