Kernel: Use the correct bpp when writing to framebuffer

This makes kernel to actually clear the full screen. If framebuffer
did not fit font exactly last row would be left partially uncleared

kernel/kernel/Device/FramebufferDevice.cpp

@@ -115,7 +115,7 @@ namespace Kernel
 		if ((size_t)offset >= m_width * m_height * bytes_per_pixel_internal)
 			return 0;
 		
-		size_t bytes_to_copy = BAN::Math::min<size_t>(m_width * m_height * 3 - offset, buffer.size());
+		size_t bytes_to_copy = BAN::Math::min<size_t>(m_width * m_height * bytes_per_pixel_internal - offset, buffer.size());
 		memcpy(reinterpret_cast<void*>(m_video_buffer->vaddr() + offset), buffer.data(), bytes_to_copy);
 
 		uint32_t first_pixel = offset / bytes_per_pixel_internal;

userspace/Shell/main.cpp

@@ -290,7 +290,7 @@ BAN::Optional<int> execute_builtin(BAN::Vector<BAN::String>& args, int fd_in, in
 
 	if (args.front() == "clear"sv)
 	{
-		fprintf(fout, "\e[H\e[J");
+		fprintf(fout, "\e[H\e[2J");
 		fflush(fout);
 	}
 	else if (args.front() == "exit"sv)