ARM: rmobile: Enable sysinfo on R-Car Gen3

Enable support for sysinfo on supported R-Car Gen3 boards. The sysinfo
is used e.g. to access and decode board-specific information and then
in turn used by board-info to print those information. On R-Car Gen3
the sysinfo rcar3 driver is used to parse the board ID EEPROM, obtain
board type and revision from it, and let board-info print this
information on boot.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>

configs/r8a77990_ebisu_defconfig

@@ -83,6 +83,7 @@ CONFIG_SCIF_CONSOLE=y
 CONFIG_SPI=y
 CONFIG_DM_SPI=y
 CONFIG_RENESAS_RPC_SPI=y
+CONFIG_SYSINFO=y
 CONFIG_TEE=y
 CONFIG_OPTEE=y
 CONFIG_USB=y

configs/rcar3_salvator-x_defconfig

@@ -90,6 +90,7 @@ CONFIG_SCIF_CONSOLE=y
 CONFIG_SPI=y
 CONFIG_DM_SPI=y
 CONFIG_RENESAS_RPC_SPI=y
+CONFIG_SYSINFO=y
 CONFIG_TEE=y
 CONFIG_OPTEE=y
 CONFIG_USB=y

configs/rcar3_ulcb_defconfig

@@ -86,6 +86,7 @@ CONFIG_SPI=y
 CONFIG_DM_SPI=y
 CONFIG_RENESAS_RPC_SPI=y
 CONFIG_SYSRESET=y
+CONFIG_SYSINFO=y
 CONFIG_TEE=y
 CONFIG_OPTEE=y
 CONFIG_USB=y