crypto: vmx - Source headers are not good kernel-doc candidates

crypto: vmx - Source headers are not good kernel-doc candidates

Fixes the following W=1 kernel build warning(s):

 drivers/crypto/vmx/vmx.c:23: warning: expecting prototype for Routines supporting VMX instructions on the Power 8(). Prototype was for p8_init() instead

Cc: "Breno Leitão" <[email protected]>
Cc: Nayna Jain <[email protected]>
Cc: Paulo Flabiano Smorigo <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Herbert Xu <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Henrique Cerri <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Lee Jones <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>