fix(plat/rcar): fix cache maintenance process of reading cert header
fix(plat/rcar): fix cache maintenance process of reading cert header

Move calling inv_dcache_range from before io_read to after that.

Signed-off-by: Hideyuki Nitta <157a8d8ef8f394e865e6e7e05394892c6ab1e8cd@hitachi.com>
Signed-off-by: Toshiyuki Ogasahara <400c4e7a7839959b6b07a73f04007ccb4fab1369@hitachi.com>
Signed-off-by: Yoshifumi Hosoya <d86d911fdf74bc568916e51d62d67d57b0acd5dd@renesas.com>
Change-Id: Ic0dabf3eb94eeeb04099ed5127cdfda79bbac9b3

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware