Input: hyperv-keyboard - remove dependencies on PAGE_SIZE for ring buffer

Define the ring buffer size as a constant expression because it should
not depend on the guest page size.

Signed-off-by: Maya Nakamura <[e-mail]>
Reviewed-by: Michael Kelley <[e-mail]>
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/serio/hyperv-keyboard.c

···
 
 #define HK_MAXIMUM_MESSAGE_SIZE 256
 
-#define KBD_VSC_SEND_RING_BUFFER_SIZE		(10 * PAGE_SIZE)
-#define KBD_VSC_RECV_RING_BUFFER_SIZE		(10 * PAGE_SIZE)
+#define KBD_VSC_SEND_RING_BUFFER_SIZE		(40 * 1024)
+#define KBD_VSC_RECV_RING_BUFFER_SIZE		(40 * 1024)
 
 #define XTKBD_EMUL0     0xe0
 #define XTKBD_EMUL1     0xe1