Tegra: public interfaces to get the chip's major/minor versions

This patch opens up the interfaces to read the chip's major/minor versions
for all Tegra drivers to use.

Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
diff --git a/plat/nvidia/tegra/common/tegra_platform.c b/plat/nvidia/tegra/common/tegra_platform.c
index 5b96459..0724b18 100644
--- a/plat/nvidia/tegra/common/tegra_platform.c
+++ b/plat/nvidia/tegra/common/tegra_platform.c
@@ -82,7 +82,7 @@
 /*
  * Read the chip's major version from chip ID value
  */
-static uint32_t tegra_get_chipid_major(void)
+uint32_t tegra_get_chipid_major(void)
 {
 	return (tegra_get_chipid() >> MAJOR_VERSION_SHIFT) & MAJOR_VERSION_MASK;
 }
@@ -90,7 +90,7 @@
 /*
  * Read the chip's minor version from the chip ID value
  */
-static uint32_t tegra_get_chipid_minor(void)
+uint32_t tegra_get_chipid_minor(void)
 {
 	return (tegra_get_chipid() >> MINOR_VERSION_SHIFT) & MINOR_VERSION_MASK;
 }