omap: Split i2c platform init for mach-omap1 and mach-omap2

Otherwise we cannot limit new mux code to mach-omap2.
The same signal names should eventually work for other
omaps under mach-omap2.

Note that these pins don't need to be OMAP_PIN_INPUT_PULLUP,
just OMAP_PIN_INPUT is enough.

Cc: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap1/i2c.c

diff --git a/arch/arm/mach-omap1/i2c.c b/arch/arm/mach-omap1/i2c.c
new file mode 100644
index 0000000..bc9d12b
--- /dev/null
+++ b/arch/arm/mach-omap1/i2c.c
@@ -0,0 +1,33 @@
+/*
+ * Helper module for board specific I2C bus registration
+ *
+ * Copyright (C) 2009 Nokia Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#include <plat/i2c.h>
+#include <plat/mux.h>
+
+int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
+			  struct i2c_board_info const *info,
+			  unsigned len)
+{
+	omap_cfg_reg(I2C_SDA);
+	omap_cfg_reg(I2C_SCL);
+
+	return omap_plat_register_i2c_bus(bus_id, clkrate, info, len);
+}