Renesas SH7734 has two I2C interfaceis.
This supports these I2C.

V5: - include i2c.h.
    - Add check of icsr bit polling logic.
	- Implement i2c_probe.
V4: - Remove sh_i2c_dump_reg function.
    - Use puts() when there's no format.
    - Chnage check for I2C bus number.
    - Remove space before the semi-colon.
V3: - Fix error for whitespace.
V2: - Changed bit control to use the clr|set|clrsetbits_* functions.
    - Fix wrong comment style.
    - Add new line before for loop in i2c_read.
Signed-off-by: NNobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Acked-by: NHeiko Schocher <hs@denx.de>
Signed-off-by: NNobuhiro Iwamatsu <iwamatsu@nigauri.org>
Acked-by: NMike Frysinger <vapier@gentoo.org>