gpu: nvgpu: backward support for HW2.5 Rev.A

Add backward support for HW2.5 Rev.A board:
- no INA3221 for voltage, current, and power
- use PG418 MCLK switching sequences

Allow VBIOS from .53 for PG419

Bug 1929155

Change-Id: Ifacfc8cff6d00f66af92305119d0f0d3b9a1e438
Reviewed-on: http://git-master/r/1497001
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
(cherry picked from commit 952778f814916b0b3d5043c43755bfccb467c3d4)
Reviewed-on: http://git-master/r/1497295
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>

drivers/gpu/nvgpu/common/linux/pci.c

@@ -197,7 +197,7 @@ static struct gk20a_platform nvgpu_pci_device[] = {
 	.ch_wdt_timeout_ms = 7000,
 
 	.honors_aperture = true,
-	.vbios_min_version = 0x86065600,
+	.vbios_min_version = 0x86065300,
 	.hardcode_sw_threshold = false,
 	.ina3221_dcb_index = 1,
 	.ina3221_i2c_address = 0x80,